War, as defined by wikipedia is, "An intense armed conflict between states, governments, societies or parliamentary groups such as mercenaries, insurgents and militias. It is generally characterized by extreme violence, aggression, destruction, and mortality, using regular or irregular military forces."

India gained it's independence from the British Raj in 1947 and since than India had involved in almost 5 wars against its neighbours over various issues. Out of five, four were against Pakistan while one against China.

War of 1947 (Against Pakistan ) -

Also called, the First Kashmir War and the Indo-Pakistani war of 1947, fought between India and Pakistan over the princely state of Jammu Kashmir. India lost about 1104 valiants while Pakistan lost 6000. After the war, India gained about two-thirds of Kashmir while Pakistan satisfied itself with the remaining one-third.

War of 1965 ( Against Pakistan ) -

Also called the Indo-Pakistani war of 1965, was fought between India and Pakistan following Pakistan's operation "Gibraltar". Operation Gibraltar was the codename given to the strategy of Pakistan to infiltrate Jammu and Kashmir and instigate the locals in starting a rebellion against the Indian rule there. However, the strategy...