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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
In what year did Iskander Mirza start military service?
On 16 July 1921, Iskander Mirza was promoted to lieutenant and was assigned to command a platoon on 30 December 1921.

Question: where did he serve
Self-contained rewrite: Where did Iskander Mirza serve?