This is a militärpaß for an enlisted soldier who served in Königs-Infanterie-Regiment (6. Lothringisches) Nr 145. This soldier, Georg Oppel, was born in 1875. Thus, in August 1916, he was forty-one years old. He was mustered in at the recruit depot and assigned to I. Ersatz-Bataillon. He was later assigned to another infantry regiment and saw limited action in the war.