I just hope that the make-up crew makes an effort to
de-beautify the actors...For example, in real life in the WWII era, very few folks had perfect, braces-produced, brilliantly white Porcelain-veneer teeth/smiles. Unfortunately, Hollywood-type actors can't get a job without such 'Looks'.
Consider Das Boot, which avoided the Beautiful Actor syndrome: "Most of the filming was done in one year; to make the appearance of the actors as realistic as possible, scenes were filmed in sequence over the course of the year. This ensured natural growth of beards and hair, increasing skin pallor, and signs of strain on the actors, who had, just like real U-boat men, spent many months in a cramped, unhealthy atmosphere.
Throughout the filming, the actors were forbidden to go out into the sunlight, to create the pallor of men who seldom saw the sun during their missions.
Think about the appearance of the Chief Mechanic, Johann: