Second World War

On 1 May 1941, Raina was attached to the 10th Battalion of the 8th Punjab Regiment, but subsequently considered the air force and briefly served as a cadet in the Indian Air Force during July–August 1941.^[6] He then joined the Officers' Training School at Mhow.^[6] On 12 April 1942, Raina received an emergency commission as a second lieutenant in the 10th Battalion of 19th Hyderabad Regiment,^[9] which became the Kumaon Regiment in 1948.^[10] Raina initially joined 10/19 Hyderabad, then at Agra, but was posted to 2/19 Hyderabad in December 1942.^[6] In March 1943, he was posted to 1/19 Hyderabad, stationed in Iraq.^[6] 1/19 Hyderabad was then part of the 24th Indian Infantry Brigade, attached to the 6th Indian Infantry Division. By the time Raina joined his battalion in Iraq, the major actions in which Iraqforce had been involved in were over. While at Kirkuk, Raina was seriously wounded in a grenade-throwing accident which left him with severe wounds in his thighs and resulted in the loss of an eye.^[6] He had a glass eye in place for the rest of his career in the army.^{[citation needed]}

In July 1944, Raina's battalion returned to India and was attached to the 26th Indian Infantry Brigade, which that December was sent to Burma attached to the 36th Indian Infantry Division^[6] He was mentioned in dispatches for his service in the Burma Campaign.^[11]

Post-Independence

Over August 1949 - January 1951, Raina served as Indian Army Liason Officer at the School of Infantry in Warminster, UK.^[12]

He was the Brigade Commander at Chushul in Ladakh during November 1962. He was awarded the Maha Vir Chakra for his handling of the Battle of Chushul. He was a veteran of the 1962 war and 1971 wars.^[13]

On 5 January 1965, Lieutenant-Colonel Raina was appointed Brigadier General Staff (BGS) of the XXXIII Corps in West Bengal.^[14][2]

On 7 October 1971, Raina was appointed General Officer Commanding of II Corps in the Khulna sector, with the acting rank of Lieutenant General.^[15] Raina was awarded the Padma Bhushan for his contributions in the War.

Raina was appointed GOC-in-C, Western Command on 27 October 1973.^[16] He served as the Chief of Army Staff of the Indian Army from 1 June 1975 to 31 May 1978.

During his tenure as the COAS, the central government led by Indira Gandhi declared a state of national emergency in India. Before the imposition of the emergency, it is believed that the Prime Minister asked for the Army's support in the venture, but General Raina bluntly told the Prime Minister that the army would not be used to 'further her ends' but obey only those orders of a 'legally construed government.' . This was considered a crucial moment that kept the Indian Army out of politics at a critical juncture.^[17]