premise: Zafar Mahmud (1923–2016) was a Royal Indian Air Force officer during the second world war, originally stationed in Burma and subsequently stationed in Quetta (in present-day Pakistan) from 1945 to 1947 before the partition of British India. He was sent to England a number of times to train with the Royal Air Force just before and after the war.
hypothesis: Zafar Mahmud fought in the Vietnam War.
reason: The passage mentions nothing about the Vietnam War. He could have fought in it - there is no way to know from the passage. He was still alive so it is possible. 