From 25 March 1939 membership in the Hitler Youth was made compulsory for all children over the age of ten.[375] The Jungmädelbund (Young Girls League) section of the Hitler Youth was for girls age 10 to 14 and the Bund Deutscher Mädel (BDM; League of German Girls) was for young women age 14 to 18. The BDM's activities focused on physical education, with activities such as running, long jumping, somersaulting, tightrope walking, marching, and swimming.[376]