You will be given a context, a subject and a relation. Your task is to generate a question based on the subject and relation. The generated question should include the given subject. Try to use a minimum number of words that are not present in either context, subject or relation while generating question.

Context : Brendan Hughes (16 October 1948 -- 16 February 2008), also known as ''The Dark'', was a leading Irish republican and former Officer Commanding (OC) of the Belfast Brigade of the Provisional Irish Republican Army (IRA).
Subject : Brendan Hughes
Relation : military branch
What military was Brendan Hughes a part of?