Gaining a commission in 1940 as an artillery officer in the British Indian Army to participate in World War II, he rose to command the 8th and 15th infantry divisions in the war with India in 1965. In 1969, he was posted to command the IV Corps while acting as martial law administrator in West Pakistan under President Yahya Khan. In 1971, he took over the command of army's Eastern Command in East Pakistan and appointed as Governor of East Pakistan where he oversaw the planning and the military deployments to execute the military operations to quell the liberation war efforts by the Awami League. His tough rhetoric to deal with political enemies earned him notoriety and a nickname of "Touka" (meaning "Cleaver") and he was soon relieved of his command by President Yahya Khan.