Conversation so far:
Where did Iskander Mirza go to school?
Iskander Mirza grew up and completed his schooling in Bombay, attending the Elphinstone College of the University of Bombay.
what did Iskander Mirza study at the Elphinstone College of the University of Bombay

Question: in what year did he start his military service
Self-contained rewrite: In what year did Iskander Mirza start military service?