In Nazi Germany, some forms of reconstructive surgery were mandated to enable the “too ugly” solder to become a “real” soldier. Because of course, looking good is necessary to kill other people. Benito Mussolini’s (1880-1945) Italy also used plastic surgery to increase the performance of military officers, such as correcting drooping eyelids. But at least that served a purpose, instead of being just about vanity. Those vain Nazis.
The nazis were one of the first political groups to have an overarching design aesthetic, a concept of what their regime should LOOK like. They had a “style guide”, requiring all insignia to have “diagonal lines, vertical shapes, and strong, bold edges”, they were intimately concerned with the design and visual impact of all their equipment (sometimes to functional detriment) and had the same regard for the overall appearance of their soldiers, officers, etc.
Hitler, having an artistic bent, probably understood that while propaganda is important for starting or sparking a movement or political regime, overall continuity is a very good way to keep it going.
It’s horrid of course that it took a hateful fascist bastard to give a damn what the government looked like and to value the arts as an important part of the regime- but since then others have used it to great effect as well.
Aesthetics and visual communication do make a difference- in this case, the veneer of respectability and uniformity convinced hundreds of thousands of citizens to blindly follow a group whose ultimate goal they never truly questioned.