First Lieutenant Hagen is Major Trapp’s adjutant. “Hagen” is actually an alias and very little is known about him other than that he was killed in 1943. Before the executions in Józefów begin, Hagen takes charge of the process of selecting Jews to be sent to work instead of being executed that day. During a judenjagd, Hagen and some others stumble on a camp of escaped Russians and Jews who are armed. Hagen is accidentally killed by one of his own men during the firefight.