Uhland is supposed to be the rank of Standartenführer (Colonel) but the collar tab rank insignia on his uniform is actually the rank of a Hauptsturmführer (Captain).
Although the film takes place between the flight of Rudolf Hess on May 10, 1941, and the invasion of the Soviet Union on June 22, 1941, one of the guests is brought to the party in a post-war Volkswagen van.