Conversation so far:
How did Adolf Hitler get into politics?
Adolf Hitler was discharged from the army on 31 March 1920 and began working full-time for the National Socialist German Workers Party, a hotbed of anti-government German nationalists.
Did Adolf Hitler go to college?
What did Adolf Hitler do for income during his youth?
Adolf Hitler earned money as a casual labourer and by painting and selling watercolours of Vienna's sights during his youth.
What did Adolf Hitler do after studying fine arts?
Adolf Hitler applied for admission to the Academy of Fine Arts Vienna but was rejected twice.
How did Adolf Hitler get out of the homeless shelters?
Adolf Hitler received the final part of his father's estate in May 1913 and moved to Munich, Germany.
What did Adolf Hitler do when he lived in Munich, Germany after receiving his father's estate?
When Adolf Hitler was conscripted into the Austro-Hungarian Army, he journeyed to Salzburg on 5 February 1914 for medical assessment.

Question: What did he do in the army
Self-contained rewrite: What did Adolf Hitler do in the army during World War I?