Task: Question Answering
Input (English): Context : Hans-Joachim Schibau (17 November 1915 -- 22 July 1985) was a highly decorated Major im Generalstab in the Luftwaffe during World War II, and a recipient of the Knight's Cross of the Iron Cross. 
Question : To which branch did Hans-Joachim Schibau belong?
Output (English): Luftwaffe