Department of Military Affairs

The Department of Military Affairs (DMA) was established on 1 January 2020 as the fifth department within India's Ministry of Defence, joining the Department of Defence, the Department of Defence Production, the Department of Defence Research and Development, and the Department of Ex-Servicemen Welfare. Its creation flowed from Prime Minister Narendra Modi's Independence Day announcement on 15 August 2019 that India would institute a Chief of Defence Staff (CDS), and from the Union Cabinet's decision of 24 December 2019 approving both the CDS post and the new department. The reform implemented the long-pending recommendations of the Kargil Review Committee (2000), the Group of Ministers report on national security (2001), and the Naresh Chandra Task Force (2012), all of which had urged a single-point military adviser and a tri-service integrating structure. The DMA was constituted through an amendment to the Government of India (Allocation of Business) Rules, 1961, which reassigned subjects from the Department of Defence to the new body.

Procedurally, the DMA is unique among Indian government departments because it is headed not by a civil servant of the Indian Administrative Service but by the CDS, a four-star military officer who functions as Secretary to the Government of India. General Bipin Rawat, the first CDS, assumed charge on 1 January 2020. The department exercises authority over the three armed forces — the Army, the Navy, and the Air Force — and their respective headquarters, which were redesignated as Integrated Headquarters of the Ministry of Defence. Matters concerning procurement exclusive to the services (excluding capital acquisitions), works and territorial army, and the Department's own administration were transferred from the Department of Defence to the DMA. The CDS also functions as the Permanent Chairman of the Chiefs of Staff Committee, a body previously chaired on rotation by the senior-most service chief.

A central mandate of the DMA is the promotion of jointness in procurement, training, and staffing, and ultimately the creation of integrated theatre commands that would place all three services under unified operational command in defined geographic and functional areas. The CDS, through the DMA, was tasked with bringing about this restructuring within a defined timeframe, though successive deadlines have shifted. The department also assigns inter-service prioritisation of capital acquisition proposals based on anticipated budgets, and it handles the facilitation of restructuring of military commands for optimal resource use. Importantly, the CDS in the DMA role does not exercise command over any of the three service chiefs, who retain operational command of their forces; the CDS provides single-point military advice to the Defence Minister on tri-service matters.

The contemporary work of the DMA has centred on New Delhi's South Block and Sena Bhawan offices. After General Rawat's death in a helicopter crash near Coonoor on 8 December 2021, the post of CDS and DMA Secretary remained vacant until General Anil Chauhan assumed office on 30 September 2022. The government amended the service rules in June 2022 to widen the eligibility pool to retired Lt Generals, Vice Admirals, and Air Marshals under 62. Under General Chauhan, the DMA has driven the Inter-Services Organisations (Command, Control and Discipline) Act, 2023, which empowers commanders-in-chief of joint organisations to exercise disciplinary authority over personnel of all three services — a legal prerequisite for functioning theatre commands.

The DMA must be distinguished from the Department of Defence (DoD), with which it shares the Ministry of Defence. The DoD, headed by the Defence Secretary, retains responsibility for defence policy, capital acquisitions, the Defence Ministry's budget, and overall coordination, and it remains the nodal department on national security questions linking the military to the Cabinet Committee on Security. The DMA, by contrast, owns the operational and integration agenda of the uniformed services. This division has generated friction over the demarcation of turf, particularly regarding who controls capital procurement and budgetary allocation. The DMA also differs from the Chiefs of Staff Committee, which is a coordinating forum rather than an executive department, and from the Headquarters Integrated Defence Staff, which functions as the secretariat supporting the CDS.

Controversies surrounding the DMA reflect deeper tensions in Indian civil-military relations. The placement of a serving officer as a Secretary-rank head of a government department was a significant departure from the post-independence convention of strict civilian bureaucratic control over the military establishment. Some commentators welcomed reduced civilian interposition in operational matters; others cautioned about the erosion of the civil-bureaucratic buffer. The pace of theatreisation has remained the principal point of debate, with the Army, Navy, and Air Force expressing differing views on the number, geography, and air-asset allocation of proposed theatre commands. As of the mid-2020s, the proposed structure includes a Northern (China-facing) land theatre, a Western (Pakistan-facing) theatre, and a Maritime Theatre Command.

For the working practitioner — whether a UPSC aspirant addressing GS Paper III internal-security and defence questions, a desk officer, or a policy analyst — the DMA represents the most consequential structural reform of India's higher defence organisation since independence. It institutionalises tri-service integration, creates a single-point military adviser, and lays the legal and administrative groundwork for theatre commands modelled loosely on the unified-command systems of the United States and China. Understanding the DMA's relationship to the Department of Defence, the limits of the CDS's authority over service chiefs, and the unresolved theatreisation debate is essential to analysing India's evolving defence posture and its civil-military equilibrium.