Task: Question Answering
Input (English): Context : Hermann-Friedrich Joppien (19 July 1912 -- 25 August 1941) was a German Luftwaffe military aviator during World War II, a fighter ace credited with 70 enemy aircraft shot down in roughly 270 combat missions. 
Question : During which historic war was Hermann-Friedrich Joppien an officer?
Output (English): World War II