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Graduate Level intermediate Indian Defence Indian Army Indian Navy Indian Air Force Missiles Military Exercises

Indian Defence — Armed Forces, Ranks, Missiles, Exercises, Nuclear Doctrine

Study notes on Indian defence forces covering Army, Navy, Air Force structure, missiles, joint exercises, and nuclear doctrine for Kerala PSC.

Published: 21 Apr 2026

Indian defence is a frequently tested topic in Kerala PSC general knowledge. This covers the structure, commands, missiles, exercises, and nuclear policy.

Supreme Command

PositionRole
President of IndiaSupreme Commander of the Armed Forces
Defence MinisterPolitical head; oversees Ministry of Defence
Chief of Defence Staff (CDS)Heads Department of Military Affairs; permanent chairman of Chiefs of Staff Committee
First CDSGeneral Bipin Rawat (appointed 1 January 2020; died December 2021)

Indian Army

AspectDetails
Founded1 April 1895 (as British Indian Army); 15 January — Army Day
HQNew Delhi
HeadChief of Army Staff (COAS)
Motto”Service Before Self”
StrengthOver 12 lakh active personnel (one of the largest armies in the world)

Army Commands

CommandHQ
NorthernUdhampur
WesternChandimandir (Chandigarh)
EasternKolkata
SouthernPune
CentralLucknow
South WesternJaipur
Army Training Command (ARTRAC)Shimla

Army Ranks (Descending Order)

RankStars/Insignia
Field MarshalFive-star (honorary; only 2 awarded: Sam Manekshaw and K.M. Cariappa)
GeneralFour-star
Lieutenant GeneralThree-star
Major GeneralTwo-star
BrigadierOne-star
Colonel
Lieutenant Colonel
Major
Captain
Lieutenant

Indian Navy

AspectDetails
Founded26 January 1950 (Royal Indian Navy renamed)
Navy Day4 December (commemorates 1971 attack on Karachi)
HQNew Delhi
HeadChief of Naval Staff (CNS)
Motto”Sham No Varunah” (May the Lord of Water be auspicious unto us — from Rigveda)
CommandHQ
Western Naval CommandMumbai
Eastern Naval CommandVisakhapatnam
Southern Naval CommandKochi (only training command)

Key Naval Assets

AssetDetails
INS VikrantIndia’s first indigenous aircraft carrier; commissioned 2 September 2022
INS VikramadityaModified Kiev-class carrier acquired from Russia (2013)
INS ArihantIndia’s first nuclear-powered ballistic missile submarine (SSBN); indigenous
INS ChakraNuclear attack submarine leased from Russia

Indian Air Force (IAF)

AspectDetails
Founded8 October 1932
Air Force Day8 October
HQNew Delhi
HeadChief of Air Staff (CAS)
Motto”Nabha Sparsham Deeptam” (Touch the sky with glory — from Bhagavad Gita)

Air Force Commands

CommandHQ
Western Air CommandNew Delhi
Eastern Air CommandShillong
Central Air CommandPrayagraj (Allahabad)
Southern Air CommandThiruvananthapuram
South Western Air CommandGandhinagar
Training CommandBengaluru
Maintenance CommandNagpur

Key Aircraft

AircraftTypeOrigin
RafaleMultirole fighterFrance (36 acquired)
Sukhoi Su-30MKIAir superiority fighterRussia (licence-built in India)
Tejas (LCA)Light combat aircraftIndigenous (HAL)
C-17 GlobemasterStrategic transportUSA
Chinook CH-47Heavy-lift helicopterUSA
Apache AH-64EAttack helicopterUSA

Indian Missiles

MissileTypeRangeDetails
Agni-VICBM (surface-to-surface)5,000+ kmNuclear capable; can reach China
Agni-PMedium range ballistic1,000–2,000 kmNew generation, canisterised
PrithviShort range ballistic150–350 kmFirst indigenous ballistic missile
BrahMosCruise missile290–500 kmIndia-Russia joint venture; supersonic (Mach 2.8); world’s fastest cruise missile
NirbhaySubsonic cruise1,000+ kmIndigenous long-range cruise missile
AkashSurface-to-air25–80 kmIndigenous air defence
NagAnti-tank4–7 kmFire-and-forget; “Helina” is helicopter-launched version
AstraAir-to-air110+ kmIndigenous beyond-visual-range
K-4/K-15Submarine-launchedK-15: 750 km; K-4: 3,500 kmLaunched from Arihant-class submarines
ShauryaSurface-to-surface700–1,900 kmCanisterised; hypersonic

DRDO (Defence Research and Development Organisation):

  • HQ: New Delhi
  • Founded: 1958
  • Develops indigenous defence technologies
  • Head: Chairman DRDO (also Secretary, Department of Defence R and D)

Major Joint Military Exercises

ExerciseCountriesService
MalabarIndia, USA, Japan, Australia (Quad nations)Navy
Yudh AbhyasIndia, USAArmy
Cope IndiaIndia, USAAir Force
Garuda ShaktiIndia, IndonesiaArmy
JIMEXIndia, JapanNavy
VarunaIndia, FranceNavy
IndraIndia, RussiaTri-service
Surya KiranIndia, NepalArmy
SIMBEXIndia, SingaporeNavy
Tarang ShaktiIndia + multinationalAir Force (first multilateral IAF exercise, 2024)
Pralay SahayamIndia, ASEANHumanitarian assistance

India’s Nuclear Doctrine

AspectDetails
First nuclear testSmiling Buddha — 18 May 1974 (Pokhran-I, “peaceful nuclear explosion”)
Second testPokhran-II (Operation Shakti) — 11 and 13 May 1998 (under PM Atal Bihari Vajpayee)
Nuclear doctrineNo First Use (NFU) — India will not use nuclear weapons first
Massive retaliationIf attacked with nuclear weapons, India reserves the right to respond with massive retaliation
Nuclear Command AuthorityPolitical Council (headed by PM — authorises use) and Executive Council (headed by CDS — executes)
Nuclear triadLand (Agni missiles), Sea (Arihant submarines), Air (fighter aircraft)
India is NOT a signatory toNPT (Non-Proliferation Treaty) or CTBT (Comprehensive Test Ban Treaty)

Paramilitary and Central Armed Police Forces (CAPFs)

ForceUnderRole
BSF (Border Security Force)MHAGuards India-Pakistan and India-Bangladesh borders
CRPF (Central Reserve Police Force)MHAInternal security, anti-Naxal operations; largest CAPF
CISF (Central Industrial Security Force)MHAProtects airports, metro, industrial installations
ITBP (Indo-Tibetan Border Police)MHAGuards India-China border
SSB (Sashastra Seema Bal)MHAGuards India-Nepal and India-Bhutan borders
NSG (National Security Guard)MHACounter-terrorism; “Black Cats”
Assam RiflesMHA (operational control: Army)Guards India-Myanmar border; oldest paramilitary force (1835)

PSC-Focused Quick Recall

Question PatternAnswer
Supreme Commander of Armed ForcesPresident of India
Army Day15 January
Navy Day4 December
Air Force Day8 October
First CDS of IndiaGeneral Bipin Rawat
BrahMos is a joint venture ofIndia and Russia
First indigenous aircraft carrierINS Vikrant
Pokhran-II year1998
India’s nuclear policyNo First Use
Southern Naval Command HQKochi
Largest CAPFCRPF
Oldest paramilitary forceAssam Rifles (1835)
DRDO headquartersNew Delhi
IAF motto is fromBhagavad Gita
Tejas manufactured byHAL (Hindustan Aeronautics Limited)

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