Building Atmanirbhar Defence: Modernisation and Indigenisation

A nation that imports its weapons rents its security. For decades India was the world's largest arms importer, fielding a force where over 60 per cent of Army equipment was vintage, while a two-front challenge, a capability gap with China, and the rise of cyber, space and drone warfare made dependence a strategic liability. The answer India is building is Atmanirbhar Bharat in defence: a self-reliant military-industrial base pursued through procurement reform, start-up innovation, industrial corridors, joint military commands and a new personnel model. Operation Sindoor in May 2025 became the first live test of how far that transformation has come.

This article explains the modernisation architecture: the procurement revolution of DAP 2020, the innovation engines, the corridors and the air-defence shield, the unfinished jointness project, and the Agniveer reform that changed who serves.

Why the rebuild cannot wait

Modernisation in India is driven by compulsion, not ambition. A CAG report (2023) found over 60 per cent of Army equipment vintage: the MiG-21 soldiered on until its retirement in September 2025, and the Army still fields artillery like the 1980s-era Bofors. Against this, China's 2024 defence budget exceeded $225 billion against India's roughly $73 billion, and the Galwan clashes of 2020 exposed surveillance and mobility gaps in high-altitude warfare.

Dependence carries its own dangers: technological gaps in jet engines, AESA radars and submarine air-independent propulsion; a Kaveri engine programme that failed to power the Tejas; DRDO's historically weak output-to-investment ratio; and procurement procedures that are lengthy and risk-averse. The SIPRI 2021-25 data shows India has slipped to the world's second-largest arms importer (about 8.2 per cent of global imports), down from first, proof that import dependence is falling but far from gone.

The procurement revolution: DAP 2020 and the Buy (Indian-IDDM) doctrine

The Defence Acquisition Procedure (DAP), 2020 is the rulebook that flipped India's procurement logic from importing platforms to buying Indian design. Its highest-priority category is Buy (Indian-Indigenously Designed, Developed and Manufactured) or Buy (Indian-IDDM): weapons designed and made in India. For items on the Positive Indigenisation Lists, imports are effectively barred after specified dates. Five such lists now cover over 5,500 items, of which about 3,000 were indigenised by early 2025, ranging from artillery guns and light combat helicopters to radars and corvettes.

The innovation engine: iDEX, ADITI and start-up pipeline

The Innovations for Defence Excellence (iDEX) is the Defence Ministry's flagship for turning start-ups, MSMEs and academia into defence innovators. Launched in April 2018, it offers grants of up to Rs 1.5 crore for technology development, and by February 2026 it had engaged 676 startups, signed 548 contracts, cleared 58 prototypes worth about Rs 3,853 crore, and 45 procurement contracts worth Rs 2,326 crore were placed, proof that small firms can deliver mission systems. Its advanced avatar, ADITI (Acing Development of Innovative Technologies with iDEX), funds deeper critical-technology bets, while the Technology Development Fund (TDF) and the reservation of 25 per cent of the defence R&D budget for industry, start-ups and academia push DRDO to work with, not apart from, the civilian innovation ecosystem.

Space and quantum get dedicated missions. Mission DefSpace drives innovation in space-based defence applications, Mission Shakti (2019) demonstrated India's anti-satellite capability, and the Military Quantum Mission explores unbreakable quantum encryption and GPS-independent navigation. The DRDO's ETAI framework even sets standards for trustworthy military AI, a sign of how seriously emerging tech is taken.

Defence corridors: factories before fighters

The Defence Industrial Corridors in Uttar Pradesh and Tamil Nadu are the physical geography of self-reliance: clustered industrial zones with land, testing and logistics that make private manufacturing viable. Together they have attracted Rs 8,658 crore in investment and 253 MoUs with a potential Rs 53,439 crore, spread over eleven nodes. The result shows in production: 65 per cent of defence equipment is now manufactured domestically, defence production grew 223 per cent between 2014 and 2024-25 to Rs 1.54 lakh crore, and exports hit an all-time high of Rs 38,424 crore in FY 2025-26, reaching over 100 countries with buyers including the USA, France and Armenia.

The 2026-27 defence budget reached Rs 7.85 lakh crore, the highest ever and about 2 per cent of GDP, reflecting post-Sindoor capability priorities. The Fifth-generation Advanced Medium Combat Aircraft (AMCA) programme, opened to competitive private-public bidding with five prototypes planned, and the GE F414 engine co-production deal with HAL (about 80 per cent technology transfer) are the two industrial bets that will decide whether India finally builds its own fighter lineage.

The two corridors have distinct industrial personalities. The Uttar Pradesh Defence Industrial Corridor spans six nodes, Aligarh, Agra, Jhansi, Chitrakoot, Kanpur and Lucknow, and leans toward small arms, ammunition, drones and explosives, with Aligarh emerging as a manufacturing hub and a BrahMos Aerospace integration facility reported at Lucknow. The Tamil Nadu Defence Industrial Corridor covers five nodes, Chennai, Hosur, Salem, Coimbatore and Tiruchirappalli, and plays to the state's strengths in aerospace, precision engineering and shipbuilding, drawing on Chennai's industrial ecosystem and a dense MSME supplier base. The corridor logic is the same in both: shared testing ranges, assured land and logistics that de-risk private investment in a sector with long gestation cycles.

Defence exports tell the demand-side story of the same policy push. Official figures put exports at under Rs 1,000 crore in 2013-14; they crossed Rs 23,000 crore by FY 2024-25 and reached the headline figure of Rs 38,424 crore in FY 2025-26 noted above, with buyers in over 100 countries. Headline deals include the BrahMos cruise-missile contract with the Philippines, with deliveries reported from 2024, and reported Pinaka rocket-system orders from Armenia, alongside patrol vessels, Dornier aircraft and ammunition. The government has set an export target of Rs 50,000 crore by 2029, and whether the corridors can convert memoranda of understanding into sustained export order books is the metric that UPSC-style analysis should watch.

The 2028-29 defence production target is the official goal that annual defence production will touch Rs 3 lakh crore and defence exports Rs 50,000 crore by 2028-29, stated by the Defence Minister in February 2024. It matters as the demand-side anchor for the Positive Indigenisation Lists and corridor investments already covered in this article, and it is date-labelled here so later figures can be compared on a like-for-like basis.

Key indigenous and acquired platforms

INS Vikrant is India's first indigenous aircraft carrier (IAC-1), designed by the Navy's Warship Design Bureau and built by Cochin Shipyard, and commissioned in September 2022. At about 45,000 tonnes and 262 metres, with a ski-jump for short take-off, she operates MiG-29K fighters and helicopters and carries the name of the carrier that blockaded East Pakistan in 1971. The significance is industrial rather than merely naval: only a handful of countries can design and build a carrier at home, and Vikrant proved that Indian shipyards now belong in that club.

INS Arihant is India's first indigenously built nuclear-powered ballistic-missile submarine (SSBN), commissioned in 2016 as the lead boat of the Arihant class, with a sister boat reported commissioned in 2024. Armed with submarine-launched ballistic missiles of the K-family, she conducts deterrence patrols that give India a survivable second-strike platform. Her commissioning completed the sea leg of India's nuclear triad, the ability to deliver nuclear weapons from land, air and sea, which is the subject of the doctrine section below.

The Rafale is the French-origin twin-engine multirole fighter built by Dassault Aviation, of which 36 were inducted into the Indian Air Force between 2020 and 2022 and based at Ambala and Hasimara. India negotiated reported India-specific enhancements including helmet-mounted displays, cold-weather engine-start capability and radar and electronic-warfare tweaks suited to high-altitude Ladakh operations. A naval variant, the Rafale-Marine, has been reported as the Navy's choice for carrier-borne operations, which would standardise the fleet around one platform family.

BrahMos is the supersonic cruise missile developed by BrahMos Aerospace, the Indo-Russian joint venture between the DRDO and Russia's NPO Mashinostroyenia, and named for the Brahmaputra and Moskva rivers. Flying at nearly Mach 3, it comes in land, ship, submarine and air-launched variants, the last fired from the Su-30MKI, and its range was extended to about 450 km after India joined the Missile Technology Control Regime. The Philippines contract, with deliveries reported from 2024, made BrahMos India's first big-ticket missile export.

Pinaka is the indigenous multi-barrel rocket launcher developed by the DRDO and named for Shiva's bow. It fires 214 mm rockets in rapid salvos for area saturation, and guided extended-range versions have pushed its reach well beyond the original 40 km. Reported export orders from Armenia mark it as one of the first indigenous artillery systems to win foreign buyers, the payoff of three decades of DRDO development.

The attack-helicopter fleet shows the two-track logic of modernisation in one frame. Prachand (the Light Combat Helicopter), developed by Hindustan Aeronautics Limited and inducted from 2022, is the world's only attack helicopter certified for sustained high-altitude operations, built for Siachen and eastern Ladakh. Beside it flies the imported Apache AH-64E, bought from the United States (22 for the Air Force and 6 for the Army), with battle-proven sensors and weapons. The pairing is deliberate: import to close the immediate capability gap, induct the indigenous line behind it, and let the two converge over time.

The Agni and Prithvi families are India's ballistic-missile backbone, both DRDO-developed. Prithvi is the short-range family (150-350 km variants), the Army's battlefield missile. Agni is the strategic family, from Agni-I (about 700 km) to Agni-V (over 5,000 km, intercontinental range), with the reported 2024 Mission Divyastra test demonstrating MIRV technology, multiple independently targetable re-entry vehicles, which lets one missile carry several warheads to different targets. Together the two families give India a graduated escalation ladder, from tactical battlefield use to strategic deterrence.

The nuclear triad is the capability to deliver nuclear weapons from three platforms: land-based ballistic missiles (the Agni family), air-delivered weapons (fighter aircraft), and sea-based missiles (the Arihant-class SSBNs). The logic is survivability: no single first strike can destroy all three legs, so retaliation is assured. Command of the arsenal rests with the Nuclear Command Authority, the apex body whose Political Council, chaired by the Prime Minister, is the sole authority competent to order nuclear use, while the Executive Council, chaired by the National Security Adviser, tenders advice and executes directives. India's declared doctrine since 2003 includes no-first-use (NFU): India will not use nuclear weapons first, but any nuclear attack on India will invite massive retaliation designed to inflict unacceptable damage. The debate around NFU is a mains staple: critics argue it constrains responses to tactical nuclear threats and that official statements have occasionally hinted the doctrine could evolve, while supporters say NFU buys India restraint credibility and keeps the arsenal's posture defensive. For the examination, NFU is best described as declared but debated.

The air shield: layered defence validated by Operation Sindoor

Operation Sindoor, launched on the night of 6-7 May 2025 in response to the 22 April 2025 Pahalgam terror attack that killed 26 people, began with precision strikes on nine terror-related targets in Pakistan and Pakistan-occupied Jammu and Kashmir. When Pakistan retaliated with drones and missiles, India's four-day confrontation became the first combat test of its multi-layered air defence: a network of sensors, weapons and command systems designed to detect, track and destroy aircraft, missiles and UAVs before they reach targets.

The S-400 Triumf is the long-range anchor: a Russian-origin system that can track and engage targets at several hundred kilometres, and the Defence Ministry's 2025-26 annual report credited an S-400 unit with a 314 km kill during Sindoor, described as the longest surface-to-air engagement of the conflict. UPSC asked in 2021 mains how the S-400 is technically superior to other systems, the direct PYQ anchor for this section. The indigenous answer is coming through Mission Sudarshan Chakra, announced on 15 August 2025, which envisages a fully indigenous Integrated Air and Missile Defence shield by 2035, fusing air, missile, space and cyber defence under AI-enabled command and control.

Jointness: the unfinished theatre-command project

A Theatre Command is a unified structure in which all Army, Navy and Air Force assets in a defined geography operate under one commander. India has 17 service-specific commands and only two tri-service ones (Andaman and Nicobar, and the Strategic Forces Command). The Kargil Review Committee (1999), the Naresh Chandra Committee (2012) and the Shekatkar Committee (2016) all pushed integration; Shekatkar proposed three integrated theatre commands, for the western, northern and southern fronts.

The Chief of Defence Staff (2019) and the Department of Military Affairs (2020) began the project, and the Inter-Services Organisations (Command, Control and Discipline) Act, 2023 gave legal backbone to joint command over multi-service personnel. Joint Logistics Nodes now run in Mumbai, Guwahati and Port Blair, and Mumbai's first tri-service Common Defence Station (2024) is the pilot for deeper integration. But the commands themselves are pending: CDS Gen. Anil Chauhan's recommendations for three theatre commands (Northern, Western, Maritime) reached the government by early 2026, and a new CDS took office on 31 May 2026 with jointness as his stated priority, but final political approval was still awaited as reported in 2026.

The obstacles are structural, not just cultural. The Air Force resists subordination of its air power to theatre commanders; at roughly 29-31 fighter squadrons against a sanctioned 42, its thin fleet limits flexibility; command-and-control ambiguities and the absence of a codified joint warfighting doctrine slow design. The 2025 Year of Reforms declaration and the joint doctrines for multi-domain and cyberspace operations signal intent, but theatreisation will be India's hardest military reform to complete.

The space and special-operations commands: DSA and AFSOD

The Defence Space Agency (DSA) is the tri-service agency raised in 2019 under the Chief of Defence Staff and headquartered in Bengaluru. It conducts space warfare, space situational awareness and satellite-based support to military operations, consolidating assets that the three services previously managed in fragments. Its creation followed Mission Shakti (2019), India's anti-satellite missile test, which demonstrated the kinetic capability the agency now institutionalises. The strategic logic is that modern warfighting runs on space: navigation, intelligence-surveillance-reconnaissance and communication satellites are force multipliers, which also makes them targets, so a dedicated command for the space domain was judged essential.

The Armed Forces Special Operations Division (AFSOD) is the tri-service special-forces command, also raised in 2019, which pools the Army's Para (Special Forces), the Navy's MARCOS and the Air Force's Garud commandos under one headquarters. The rationale came from the cross-border strikes of the previous decade: special operations need joint planning, pooled intelligence and common equipment standards rather than three separate fiefdoms duplicating effort. AFSOD gives the CDS a single special-operations instrument for sub-conventional, high-precision missions, and it is the institutional cousin of the theatre-command project discussed above.

Agniveer: the personnel revolution

The Agniveer scheme is a short-term recruitment model under the Agnipath Yojana, launched in June 2022 for all three services. Recruits aged 17.5 to 21 serve four years (training included) on an all-India, all-class basis, earning Rs 30,000 a month rising to Rs 40,000 by the fourth year. Up to 25 per cent of each batch may be retained for full-term service; the rest exit with a tax-free Seva Nidhi package of about Rs 11.71 lakh and skill certificates, with no pension.

The economics are compelling: it trims the pension-heavy manpower bill, keeps the force younger, and rotates personnel faster for technology-driven warfare. The anxieties are equally real: 75 per cent exit after four years with uncertain civil absorption, short training may strain unit cohesion, and protests in traditional recruitment belts like Bihar and Uttar Pradesh showed the reform's political edge. With the first batch's tenure ending in 2026, resettlement, through state cells, CAPF reservations and private placement, is the scheme's live test. Reports in 2026 suggested the services had proposed raising the retention cap, but no official decision had been announced.

OROP: One Rank One Pension

One Rank One Pension (OROP) is the principle that defence personnel retiring in the same rank with the same length of service should draw the same pension, regardless of their date of retirement. Before OROP, successive pay commissions steadily widened the gap between earlier and later retirees, so two soldiers with identical service could draw very different pensions. OROP, implemented from 2015, bridges that gap through periodic equalisation, and it covers over 25 lakh beneficiaries including family pensioners and war widows.

The demand was one of the longest-running veterans' agitations in independent India, traced to the Third Pay Commission (1973), which reduced military pensions relative to civilian counterparts and created the grievance. Its eventual acceptance is studied as a case of organised veterans' pressure converting into policy after four decades. The counter-argument, and the mains angle, is fiscal: OROP adds thousands of crores to the annual pension bill and creates a precedent other uniformed services cite, which pits welfare for veterans against fiscal prudence in every budget cycle.

Hybrid warfare and drone swarms: the Sindoor lessons

Hybrid warfare is a multi-domain strategy that fuses conventional military force with grey-zone tactics, proxy warfare, cyber attacks, information and psychological warfare, economic coercion and emerging technologies, deliberately blurring the line between war and peace. Its sub-conventional half, grey-zone warfare, uses coercive, ambiguous steps below the threshold of open war, like salami-slicing on borders or maritime coercion, to alter the status quo without triggering retaliation.

India faces every instrument of it. Pakistan's proxy warfare through groups like Lashkar-e-Taiba, Jaish-e-Mohammed and The Resistance Front (linked to the Pahalgam attack); China's salami-slicing along the LAC; state-linked cyber probing of critical infrastructure; and drone-based delivery of arms and narcotics across the Punjab border. During Operation Sindoor, 2025 assessments noted Pakistani drone swarms met by India's integrated air defence, and the X-Factor assessment recorded about 200,000 cyber probing attempts on Indian infrastructure during the operation. The Joint Doctrine for Multi-Domain Operations and the Joint Doctrine for Cyberspace Operations are India's doctrinal answers, backed by the Multi-Agency Centre, CERT-In, NCIIPC and the I4C.

UPSC and this topic: PYQ weightage

• 2021 mains (GS-3): 'How is the S-400 air defence system technically superior to any other system presently available in the world?' The direct PYQ for the air-defence section.
• 2025 linkage: Operation Sindoor and the Pahalgam attack are the canonical current-affairs anchors for questions on counter-terror response, air defence and indigenous systems.
• Prelims pattern: DAP 2020's priority category, iDEX's launch year, the defence corridors' states, the CDS's role and the Agniveer tenure are standard fact-based asks.

Key Terms

• CAG report (2023): The CAG report of 2023 refers to the Comptroller and Auditor General's audit findings on defence tabled that year, cited in the indigenisation debate for flagging capability gaps and procurement delays. It matters as the independent audit voice on military readiness. Example: CAG's 2023 findings on defence capability shortfalls.
• SIPRI 2021-25: SIPRI 2021-25 is the Stockholm International Peace Research Institute's five-year dataset on international arms transfers, the standard benchmark for comparing arms imports and exports. It matters because India's position in SIPRI rankings frames the entire indigenisation debate. Example: SIPRI's five-year trend data on global arms transfers.
• Defence Acquisition Procedure (DAP), 2020: The Defence Acquisition Procedure, 2020 is the Defence Ministry's procurement rulebook, which prioritised the Buy (Indian-IDDM) category and introduced leasing and Make-III procedures. It matters as the procedural engine of Atmanirbhar Bharat in defence. Example: DAP 2020's priority to indigenously designed equipment.
• Buy (Indian-Indigenously Designed, Developed and Manufactured): Buy (Indian-Indigenously Designed, Developed and Manufactured) is the top-priority procurement category under DAP 2020 for equipment indigenously designed, developed and manufactured, with at least 50 per cent indigenous content. It matters because it channels defence spending to domestic design, not just domestic assembly. Example: Fighter and missile programmes procured under Buy (Indian-IDDM).
• Positive Indigenisation Lists: The Positive Indigenisation Lists are the Defence Ministry's rolling lists of weapons, systems and components that will no longer be imported after specified dates, now covering over 5,000 items across five lists. They matter as the import-embargo mechanism forcing indigenisation. Example: Artillery guns and radars on the indigenisation lists.
• OFB corporatisation: OFB corporatisation is the October 2021 conversion of the 200-year-old Ordnance Factory Board into seven defence public sector undertakings to improve efficiency and accountability. It matters as the biggest structural reform of India's defence production base. Example: The seven new DPSUs formed from ordnance factories.
• FDI liberalisation: FDI liberalisation in defence raised the automatic-route foreign investment cap to 74 per cent in 2020, with 100 per cent possible on approval for modern technology. It matters because capital and technology inflow are essential for building a domestic defence industry. Example: The 74 per cent automatic-route cap for defence FDI.
• SRIJAN portal: SRIJAN is the Defence Ministry's online portal listing defence items offered for indigenisation by DPSUs and the services, inviting industry to develop them domestically. It matters as the matchmaking platform between import needs and Indian manufacturers. Example: Industry bids to indigenise spares listed on SRIJAN.
• Innovations for Defence Excellence (iDEX): Innovations for Defence Excellence, launched in 2018, funds start-ups and MSMEs to develop military technologies through challenges and grants, executed by the Defence Innovation Organisation. It matters as the pipeline bringing start-up agility into defence R&D. Example: Start-up drones and AI tools funded through iDEX challenges.
• ADITI (Acing Development of Innovative Technologies with iDEX): ADITI (Acing Development of Innovative Technologies with iDEX) is the iDEX sub-scheme launched in March 2024 offering grants up to Rs 25 crore for critical and deep technologies. It matters as the funding bridge for high-risk, high-reward defence innovation. Example: Deep-tech grants for AI and quantum defence projects.
• Technology Development Fund (TDF): The Technology Development Fund is DRDO's scheme funding industry and academia to develop defence technologies up to prototype stage. It matters because it de-risks R&D for private firms entering defence. Example: TDF grants for indigenous aero-engine components.
• Mission DefSpace: Mission DefSpace, launched in 2022, set 75 space-industry challenges for start-ups to build military space capabilities in launch, satellites, communication and surveillance. It matters as the vehicle for private-sector participation in defence space. Example: Start-up solutions for military satellite communication.
• Mission Shakti: Mission Shakti is the Ministry of Women and Child Development's umbrella mission for women's safety, security and empowerment, approved for the 15th Finance Commission cycle, with sub-schemes 'Sambal' (safety: One Stop Centres, Beti Bachao Beti Padhao) and 'Samarthya' (empowerment: PMMVY, working women's hostels). For UPSC, it is the key GS-1/GS-2 framework for questions on gender budgeting and women's welfare schemes. The name was also used for India's 2019 anti-satellite test. Example: One Stop Centres (Sakhi).
• Military Quantum Mission: The Military Quantum Mission is the Defence Ministry's policy framework released in January 2026 for adopting quantum communication, computing, sensing and materials across the Army, Navy and Air Force. It matters as the governance structure for military quantum technologies. Example: The January 2026 framework for quantum-secure military networks.
• Defence Industrial Corridors: The Defence Industrial Corridors in Uttar Pradesh and Tamil Nadu, announced in 2018-19, are dedicated manufacturing clusters with plug-and-play infrastructure to attract defence investment. They matter as the geographic anchors of the defence-manufacturing ecosystem. Example: Ammunition and drone units in the UP corridor.
• Advanced Medium Combat Aircraft (AMCA): The Advanced Medium Combat Aircraft is India's indigenous fifth-generation stealth fighter programme led by DRDO's ADA, with Cabinet approval in 2024 and first flight targeted later this decade. It matters as the flagship test of India's aerospace design capability. Example: The twin-engine stealth fighter under development by ADA.
• Operation Sindoor: Operation Sindoor is the codename for India's precision strikes on the night of 6-7 May 2025 against nine terror targets in Pakistan and Pakistan-occupied Kashmir, launched in response to the 22 April 2025 Pahalgam attack that killed 26 people. The strikes on LeT and JeM infrastructure at Muridke and Bahawalpur escalated into a four-day confrontation until a cessation understanding on 10 May. It marks a doctrinal shift in India's counter-terrorism response. Example: Strikes on Muridke and Bahawalpur, 7 May 2025.
• multi-layered air defence: Multi-layered air defence is the integration of very-short, short, medium and long-range interceptor systems with radars and command networks to defeat threats from drones to ballistic missiles. Validated during Operation Sindoor, it is the core of Mission Sudarshan Chakra. It matters because no single system covers the full threat spectrum. Example: S-400, Akash and QRSAM operating as integrated layers.
• Terminal defence: Terminal defence is the innermost layer of air defence, intercepting incoming threats in their final approach over the target, using very-short-range systems and counter-drone grids. It matters as the last line protecting high-value installations. Example: Counter-UAS grids defending airbases.
• Command and control: Command and control is the integrated network of sensors, communication links and decision systems that directs air-defence weapons to targets in real time. It matters because layered weapons are useless without a unified brain, the lesson driving network-centric upgrades. Example: The Integrated Air Command and Control System.
• S-400 Triumf: The S-400 Triumf is the Russian long-range air-defence system India contracted in 2018, with deliveries from 2021, capable of engaging aircraft and missiles at ranges up to 400 km. Its performance during Operation Sindoor validated India's long-range shield. It matters as the outermost layer of Indian air defence. Example: S-400 batteries deployed during Operation Sindoor.
• Mission Sudarshan Chakra: Mission Sudarshan Chakra, announced by Prime Minister Modi on 15 August 2025, is the programme to build an indigenous, AI-enabled, multi-layered national air-defence shield by 2035, integrating radars, interceptors, space assets and counter-strike capability. It matters as India's Iron Dome equivalent for the missile and drone age. Example: The 2035 target for a nationwide missile-defence shield.
• Theatre Command: A Theatre Command is a unified tri-service command for a geographic theatre, integrating Army, Navy and Air Force assets under one commander. India plans to replace its 17 service-specific commands with integrated theatres. It matters as the operational end-state of jointness. Example: The proposed maritime and land theatre commands.
• Kargil Review Committee (1999): The Kargil Review Committee, chaired by K. Subrahmanyam, examined the intelligence and operational failures of the 1999 Kargil conflict. Its report led to the creation of the Defence Intelligence Agency, the MAC, the NTRO and eventually the CDS. It matters as the founding document of modern Indian defence reform. Example: The 1999 report that created the MAC and DIA.
• Chief of Defence Staff: The Chief of Defence Staff, created in January 2020 with General Bipin Rawat as the first incumbent, is the principal military adviser to the government and head of the Department of Military Affairs. The CDS drives jointness, theatre commands and procurement prioritisation. It matters as India's most significant military reform since independence. Example: General Bipin Rawat as India's first CDS.
• Department of Military Affairs: The Department of Military Affairs, created in 2020 under the CDS within the Defence Ministry, handles the armed forces, procurement, training and jointness, ending the forces' exclusion from the ministry. It matters as the bureaucratic home of military integration. Example: DMA's stewardship of theatre-command creation.
• Inter-Services Organisations (Command, Control and Discipline) Act, 2023: The Inter-Services Organisations (Command, Control and Discipline) Act, 2023 empowers commanders of joint organisations to exercise disciplinary and administrative powers over personnel of all three services. Enacted in 2023, it matters as the legal enabler of genuine joint commands. Example: Disciplinary powers for tri-service establishment commanders.
• Agniveer scheme: The Agniveer scheme, launched in June 2022, recruits soldiers for four-year terms with 25 per cent retained, replacing long-service regular recruitment for other ranks. Backed by the Seva Nidhi package, it aims at a younger force and lower pension burden. It matters as the most contested defence reform of the decade. Example: Four-year Agniveer tenures with Seva Nidhi benefits.
• Seva Nidhi: Seva Nidhi is the tax-free financial corpus, around Rs 11.71 lakh, paid to Agniveers on completing their four-year service, with government matching contributions. It matters as the resettlement cushion of the Agniveer scheme. Example: The Rs 11.71 lakh exit package for Agniveers.
• Hybrid warfare: Hybrid warfare is the synchronised use of conventional force, irregular tactics, cyberattacks, disinformation and economic coercion below or alongside open war. Operation Sindoor showcased its air-defence and information dimensions. It matters because modern conflict blends all instruments simultaneously. Example: The 2025 standoff's mix of strikes, drones and information operations.
• grey-zone warfare: Grey-zone warfare is coercive statecraft between peace and open war, using cyber intrusions, disinformation, salami-slicing, drone smuggling and economic coercion that stay below the threshold of military response. It matters because adversaries exploit the gap between peace and war to win without fighting. Example: Drone smuggling and disinformation as tools below the war threshold.
• Joint Doctrine for Multi-Domain Operations: The Joint Doctrine for Multi-Domain Operations, released by the Defence Minister on 27 August 2025, formalises integrated warfighting across land, sea, air, space, cyber and the electromagnetic spectrum. It matters as the doctrinal foundation for theatre commands and joint capability building. Example: The 2025 doctrine guiding integrated tri-service operations.
• Joint Doctrine for Cyberspace Operations: The Joint Doctrine for Cyberspace Operations, released by the Chief of Defence Staff, provides strategic guidance for military cyber operations, defining cyberspace as a warfighting domain alongside land, sea and air. It matters because it mainstreams cyber into operational planning. Example: The CDS's doctrine on military operations in cyberspace.
• INS Vikrant: India's first indigenous aircraft carrier (IAC-1), built by Cochin Shipyard and commissioned in September 2022. A 45,000-tonne ski-jump carrier operating MiG-29K fighters, it placed India in the small club of nations that can design and build carriers at home. Example: Vikrant's commissioning marked the coming of age of Indian warship construction.
• INS Arihant: India's first indigenously built nuclear-powered ballistic-missile submarine (SSBN), commissioned in 2016. Armed with K-family submarine-launched ballistic missiles, its deterrence patrols completed the sea leg of India's nuclear triad. Example: Arihant's deterrence patrols give India an assured second-strike capability.
• Nuclear triad: The capability to deliver nuclear weapons from land (Agni missiles), air (fighter aircraft) and sea (Arihant-class SSBNs). The logic is survivability: no single first strike can destroy all three legs, so retaliation is assured. Example: INS Arihant's commissioning completed India's triad.
• Nuclear Command Authority (NCA): The apex body for decisions on India's nuclear arsenal. Its Political Council, chaired by the Prime Minister, is the sole authority competent to order nuclear use; the Executive Council, chaired by the National Security Adviser, tenders advice and executes directives. Example: any decision on nuclear retaliation flows through the NCA's Political Council.
• No-first-use (NFU) doctrine: India's declared nuclear doctrine since 2003: India will not use nuclear weapons first, but any nuclear attack will invite massive retaliation. Supporters cite restraint credibility; critics argue it constrains options and note hints the doctrine could evolve. Example: UPSC frames NFU as declared but debated.
• Rafale: French-origin twin-engine multirole fighter by Dassault Aviation; 36 were inducted into the IAF in 2020-22. Reported India-specific enhancements include helmet-mounted displays and high-altitude tweaks; a naval Rafale-Marine variant has been reported as the Navy's carrier choice. Example: Rafales based at Ambala and Hasimara anchor IAF deterrence on both fronts.
• BrahMos: Supersonic cruise missile (nearly Mach 3) developed by BrahMos Aerospace, the Indo-Russian joint venture between DRDO and Russia's NPO Mashinostroyenia. Available in land, ship, submarine and air-launched variants with range extended to about 450 km; exported to the Philippines. Example: the Philippines contract was India's first big-ticket missile export.
• Pinaka: Indigenous multi-barrel rocket launcher developed by the DRDO, firing 214 mm rockets in rapid salvos, with guided extended-range versions. Reported export orders from Armenia mark it among the first indigenous artillery systems with foreign buyers. Example: Pinaka's Armenia orders show the export payoff of indigenous artillery.
• Prachand (Light Combat Helicopter): Indigenous attack helicopter developed by HAL and inducted from 2022, the world's only attack helicopter certified for sustained high-altitude operations in Siachen and Ladakh. It pairs with the imported US Apache AH-64E in the IAF and Army fleets. Example: Prachand embodies the import-gap-then-indigenise two-track model.
• Agni missile family: DRDO-developed strategic ballistic missiles from Agni-I (about 700 km) to Agni-V (over 5,000 km, intercontinental range). The reported 2024 Mission Divyastra test demonstrated MIRV technology, letting one missile carry several warheads to different targets. Example: Agni-V gives India intercontinental deterrence reach.
• Prithvi missile family: DRDO-developed short-range ballistic missiles (150-350 km variants), the Army's battlefield missile complement to the strategic Agni family. Example: Prithvi provides graduated, tactical-range strike options.
• Defence Space Agency (DSA): Tri-service agency raised in 2019 under the CDS and headquartered in Bengaluru, handling space warfare, space situational awareness and satellite support to operations. It institutionalises the capability demonstrated by the 2019 Mission Shakti anti-satellite test. Example: DSA consolidates the services' fragmented space assets.
• Armed Forces Special Operations Division (AFSOD): Tri-service special-forces command raised in 2019, pooling the Army's Para (SF), Navy's MARCOS and IAF's Garuds under one headquarters for joint planning and common standards. Example: AFSOD gives the CDS a single special-operations instrument.
• One Rank One Pension (OROP): The principle that defence personnel retiring in the same rank with the same length of service draw the same pension regardless of retirement date. Implemented from 2015 after a four-decade veterans' agitation traced to the Third Pay Commission (1973); it covers over 25 lakh beneficiaries. Example: OROP is the classic welfare-versus-fiscal-prudence mains theme.
• Uttar Pradesh Defence Industrial Corridor: One of two defence industrial corridors, spanning six nodes (Aligarh, Agra, Jhansi, Chitrakoot, Kanpur, Lucknow) with a focus on small arms, ammunition, drones and explosives; a BrahMos Aerospace facility is reported at Lucknow. Example: the UP corridor anchors private defence manufacturing in the Hindi heartland.
• Tamil Nadu Defence Industrial Corridor: The second defence industrial corridor, covering five nodes (Chennai, Hosur, Salem, Coimbatore, Tiruchirappalli) and playing to the state's strengths in aerospace, precision engineering and shipbuilding with a dense MSME supplier base. Example: the TN corridor leverages Chennai's industrial ecosystem for aerospace manufacturing.
• Defence production target (2028-29): The defence production target for 2028-29 is the official goal of Rs 3 lakh crore in annual production and Rs 50,000 crore in exports, stated in February 2024. It matters as the benchmark for Atmanirbhar Bharat in defence. Example: 2028-29 target.

Practice questions