With the German Guns: Four Years on the Western Front.
He was young, idealistic, and totally taken in by the propaganda. No wonder Nazi Germany liked this memoir when it was first published in 1935 … until they figured out that he had Jewish ancestors. You can tell that he was “sanitizing” his diary for the folks back home (to whom he sent each notebook as he filled it up), because he says nothing about the rats and the lice and only makes brief reference to the unburied dead. But it fills in a lot of other details I was interested in learning about.