General Kodendera Subayya Thimayya, DSO was the 3rd Chief of Army Staff from 1957 to 1961 during the crucial years leading up to the conflict with China in 1962. Thimayya was the only Indian to command an Infantry brigade in battle during the Second World War and is regarded as the most distinguished combat officer the Indian Army has produced. After the Korean War, Thimayya headed a United Nations unit dealing with the repatriation of prisoners of war. After his retirement from the Army, he was appointed Commander of the United Nations Peace Keeping Force in Cyprus from July 1964 to December 1965 and died in Cyprus while on active duty on 18 December 1965.

The Chief of the Army Staff (COAS) is a statutory office held by the professional head of the Indian Army (IA), the land forces branch of the Indian Armed Forces. Customarily held by a four-star general officer, the COAS is the senior-most operational officer of the IA, tasked with the roles of overseeing the overall functioning of the force during peace and wartime, committing to the preparation-cum-maintenance of the force's operational effectiveness and defending the nation's territorial integrity-cum-sovereignty. Also a permanent member of the Chiefs of Staff Committee (COSC) and the National Security Council (NSC), the COAS also bears the responsibility of advising the nation's civilian leadership i.e., the Government of India on all matters privy to the IA.