Court Martial is a work of fiction. It is a WWII war novel from the persective of a squad of German Soldiers fighting on the Western Front. A good war story with lots of action with a perspective not usually seen in the Unites States. Sven Hassel has written several fictional WWII stories centering around these characters. I am not sure if it would be called a series in the current sense, but this is one of several stories involving these character's exploits during the war.