You will be given a definition of a task first, then some input of the task.
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 : Hans-Karl Stepp was born on 2 September 1914 in Gießen as son to a University professor. 
Subject : Hans-Karl Stepp 
Relation : military branch
Output:
In what military organization did Hans-Karl Stepp serve?