Defence History Questions for CDS

Ancient Indian Military Systems

Ancient India had a sophisticated military structure described in texts like Kautilya's Arthashastra and Manusmriti. The Chaturanga (four-limbed) army was the standard model — elephants, chariots, cavalry, and infantry. The Mauryan Empire under Chandragupta Maurya maintained one of the largest standing armies in the ancient world, estimated at 600,000 infantry and 9,000 war elephants by Greek accounts.

• Chaturanga: four divisions — Gaja (elephants), Ratha (chariots), Ashva (cavalry), Padati (infantry)
• Kautilya's Arthashastra is the first systematic treatise on statecraft and military organisation in India
• Chandragupta Maurya defeated Seleucus Nicator (305 BC) — major ancient military victory
• Samudra Gupta called 'Napoleon of India' for his extensive military campaigns
• Alexander's invasion (326 BC) — Battle of Hydaspes (Jhelum) against Porus — Porus fought valiantly though defeated

Medieval Battles — Key Turning Points

Medieval Indian military history is shaped by a series of decisive battles. The Battles of Panipat are the most exam-critical — three battles, each changing the political map of India. The Delhi Sultanate and Mughal Empire both relied heavily on cavalry and artillery superiority over Indian kingdoms. Knowing the year, combatants, and outcome of each major battle is essential.

• First Battle of Panipat (1526): Babur vs Ibrahim Lodi — Mughals established; Babur used artillery (tulguma tactic)
• Second Battle of Panipat (1556): Akbar (Bairam Khan) vs Hemu — Mughal rule restored after Humayun's death
• Third Battle of Panipat (1761): Ahmad Shah Abdali vs Marathas — decisive Maratha defeat, halted Maratha expansion
• Battle of Talikota (1565): Deccan Sultanates vs Vijayanagara — ended Vijayanagara Empire
• Battle of Haldighati (1576): Akbar's forces (Man Singh) vs Maharana Pratap — inconclusive but symbolic Rajput resistance
• Battle of Plassey (1757): Clive vs Siraj-ud-Daulah — British dominance in India began

Colonial Era and Wars Against British

The British consolidation of India involved multiple wars against Indian kingdoms. The Anglo-Mysore Wars, Anglo-Maratha Wars, Anglo-Sikh Wars, and Anglo-Afghan Wars are frequently tested. The 1857 Revolt (First War of Independence) is a critical milestone — it led to direct Crown rule replacing East India Company administration.

• Four Anglo-Mysore Wars (1767-1799): Tipu Sultan died in Fourth Anglo-Mysore War at Seringapatam (1799)
• Three Anglo-Maratha Wars (1775-1818): British finally defeated Marathas; Peshwa abolished
• Two Anglo-Sikh Wars (1845-49): Punjab annexed after Second Anglo-Sikh War
• 1857 Revolt: started at Meerut on 10 May 1857 — centres at Delhi, Lucknow, Kanpur, Jhansi
• Key leaders of 1857: Bahadur Shah Zafar (Delhi), Nana Sahib (Kanpur), Tantia Tope, Rani Lakshmibai (Jhansi)
• Government of India Act 1858 — Crown took over from East India Company after 1857

World Wars and India's Role

India contributed massively to both World Wars under British command. In WWI, over 1.5 million Indian soldiers served, with major contribution at Gallipoli and Mesopotamia. In WWII, the Indian National Army (INA) under Subhas Chandra Bose fought against British rule, while the regular Indian Army fought on multiple fronts including North Africa, Italy, and Burma.

• WWI (1914-18): India contributed 1.5 million troops; Battle of Haifa (1918) — famous Indian cavalry charge by Jodhpur Lancers
• Indian soldiers received 13 Victoria Crosses in WWI
• WWII (1939-45): Indian Army grew to 2.5 million — largest all-volunteer force in history
• INA (Azad Hind Fauj) formed 1942 under Mohan Singh, later led by Subhas Chandra Bose
• INA's motto: Ittehad, Itmad, Qurbani (Unity, Faith, Sacrifice)
• INA trials of 1945-46 at Red Fort galvanised Indian independence movement

Post-Independence Wars and Operations

After Independence, India has fought four major wars and conducted several key military operations. The 1971 War is considered India's greatest military victory — leading to creation of Bangladesh in just 13 days of intense fighting. Kargil 1999 was the only post-nuclear war between two nuclear-armed states and resulted in Operation Vijay restoring Indian positions.

• 1947-48 Kashmir War: India took the matter to UN; ceasefire on 1 Jan 1949; LoC established
• 1962 Sino-Indian War: India defeated; led to massive military modernisation
• 1965 Indo-Pak War: ended with Tashkent Declaration (Jan 1966); signed by Lal Bahadur Shastri and Ayub Khan
• 1971 Indo-Pak War: Operation Trident (Navy); Pakistan surrendered on 16 Dec 1971 — celebrated as Vijay Diwas
• Sam Manekshaw was the first Field Marshal of India; commanded 1971 war
• Kargil War 1999: Operation Vijay; Tiger Hill recaptured; Capt. Vikram Batra — PVC recipient (posthumous)

Structure of Indian Armed Forces

The Indian Armed Forces consist of three services — Army, Navy, and Air Force — under the Supreme Command of the President of India. The Chief of Defence Staff (CDS) position was created in January 2020 to integrate tri-service operations. This section tests institutional knowledge including ranks, commands, and key military awards.

• President of India is Supreme Commander of Armed Forces
• CDS post created 1 Jan 2020; Gen. Bipin Rawat was first CDS (died Dec 2021 in helicopter crash)
• Highest wartime gallantry award: Param Vir Chakra (PVC); peacetime: Ashoka Chakra
• Indian Army has 7 Commands; Navy has 3 Commands; Air Force has 7 Commands
• Indian Military Academy (IMA) — Dehradun; National Defence Academy (NDA) — Khadakwasla, Pune
• Operation Meghdoot (1984): India secured Siachen Glacier — world's highest battlefield

• Confusing the three Battles of Panipat — aspirants mix up the years and combatants; remember 1526-1556-1761 as a sequence and link each to who won power
• Mixing up Vijay Diwas (16 Dec — 1971 war) with Kargil Vijay Diwas (26 July — Kargil 1999); both celebrated but on different dates
• Thinking Sam Manekshaw won the 1965 war — he commanded in 1971, not 1965
• Confusing PVC (wartime) with Ashoka Chakra (peacetime gallantry) — both are highest in their category but different occasions
• Misremembering that INA was formed by Bose from the start — Mohan Singh first formed it; Bose took over leadership in 1943

• Three Panipats — BIG, BAD, BROKEN: 1526 Babur Big win, 1556 Bairam Khan (Akbar) Bad day for Hemu, 1761 Broken Marathas
• PAKB for post-independence wars in order: Pakistan 47, Arunachal (China) 62, Pakistan 65, Bangladesh 71 — then Kargil 99
• PVC = Param Veer in Combat (war); Ashoka Chakra = Peace Gallantry — A for Ashoka, A for At peace
• INA motto — UIQ: Unity (Ittehad), I trust (Itmad), Qurbani (sacrifice) — remember UIQ like a quick quiz acronym

• Panipat battles appear almost every CDS exam in some form — know year, attacker, defender, and outcome for all three cold
• 1971 war details (Operation Trident, 16 Dec Vijay Diwas, Sam Manekshaw, Pakistan's surrender) are very high-frequency PYQ items — treat as guaranteed marks
• Questions on gallantry awards often appear as which award is highest in wartime vs peacetime — do not confuse the two categories
• Recent CDS papers have included questions on NDA/IMA locations and CDS post creation — institutional facts are easy marks
• Medieval battle questions are factual and direct — focus on Panipat trilogy, Battle of Plassey, and Haldighati; avoid overthinking causes and consequences for this exam