Younger boys might wear long over the knee stockings with shorts as the weather became cooler. Sailor suits were more popular in Germany in the 1920s-30s and were not, as in Britain, just worn by little boys. All Aryan German boys after Hitler assumption to power had to join the Hitler youth. One boy wearing knee socks has on sandals. The picture was taken in Breslau in what is now Poland.
German mothers appear to have been more concerned with the winter than British mothers.
Many older boys had long pants to wear during the colder winter months. Mothers commonly made the decision as to when it was cold enough for long trousers. Unlike the smaller boys, older boys did not commonly wear over the knee stockings with shorts. Bavarian boys wore lederhosen , short leather pants, during the summer. They lasted forever and were perfect for rough outdoor wear.