In 1936, he gained commissioned in the 1st Piffers in the Frontier Force Regiment as a 2nd-Lt. In 1939, Lt. Bakhtiar participated in the World War II, first served in the India'sfrontier's operations before being dispatched to the Mediterranean and MIddle East Front, and later fought in the North Africa and Italy. For time being, Maj. Bakhtiar served as an acting commanding officer of the 6/13th FF Rifles. His valor of actions earned him the Military Cross from the Great Britain in 1945-46. On August 1947, Maj. Bakhtiar held the command of the 2nd Garhwal Rifles before being posted in the western India. After the partition of India, Lt-Col. Bakhtiar decided to transfer to the Pakistan Army, and his 1st Piffers Btn was known for having more locals than any other regiments exists in the country at that time. In 1953, Brig. Bakhtiar Rana was appointed to command the Frontier Corps in Khyber-Pakhtunkhwa as its Inspector-General until 1955. He was Chief Martial Law Administrator. As a Lieutenant General, he commanded one of Pakistan Army's strike corps, I Corps, as its Corps Commander from 1958 to 1966. As a Brigadier, he commanded the Frontier Corps as its Inspector-General from 1953 to 1955. His younger son, Major-General Ghaziuddin Rana, he also commanded the Frontier Corps from 1988 to 1990, remain, to this day, the only father and son to have commanded the Frontier Corps. As a Lieutenant General, he commanded one of Pakistan Army's strike corps, I Corps, as its Corps Commander from 1958 to 1966. During the Indo-Pakistani War of 1965, Lt. Gen. Bakhtiar Rana was the only lieutenant general commanding a corps, namely 1 Corps, and he was one of only two lieutenant generals in the Pakistan Army during the war, the other being Lt. Gen. Altaf Qadir, who was on deputation to the Central Treaty Organization.
Family
Lt. Gen. Bakhtiar Rana had two sons and one daughter. Both his sons, Ghaziuddin Rana and Salahuddin Rana, joined the Pakistan Army and rose to the ranks of Major General and Brigadier respectively. His younger son, Maj. Gen. Ghazi-ud-din Rana, also served as his Aide-de-camp. Lt. Gen. Bakhtiar Rana's sister, Begum Akhtar Sultan, was married to Amir Habibullah Khan Saadi and his daughter, Talat, was married to the grandson of Chaudhry Niaz Ali Khan.
Death
Lt. Gen. Bakhtiar Rana died in Lahore, Pakistan, in 4:30 pm 10 February 1998.