After the briefing for operation "Zitadelle" (Citadel), Feigl dismisses Winter. Winter replies by saluting with the flat right hand to the forehead. This is incorrect as by the time, the Hitler salute was mandatory for military personnel when not wearing headgear. Winter does not wear one and being an officer himself, for sure he would have been aware of this.
During the Battle of Kursk (July 5 - August 23, 1943) Russian could not use Faustpatrone. This type of weapon was used in the Wehrmacht only in August 1943.
In some shots, Friedhelm uses M48 rifle, which was a Yugoslav version of Kar98k produced after the war.