Passage: On 1 December 1914, he was drafted for military service. A year later, in 1915, he published his first story, in the magazine Die Freie Straße ["Free street"]. In 1916, Graf was nearly court-martialed for refusing a command. However, after a ten-day hunger strike, he was sent instead to a psychiatric hospital and later discharged from the military.

Question: What year did he publish his first piece?
1915