The YMCA homes (YMCA - Christian youth movement) grew with the arrival of the Americans during World War I. They suggested rest rooms for the soldiers, reading, lectures, performances, a social care home and a religious listening and sporting activities.

YMCA was used to entertain soldiers, rest and relax the soldiers during their rest time, give them the illusion of a family home. To carry out this program, the association developed independent buildings granted by the army. The YMCA provided all expenses. This combination offers a program of activities such as:

- Outdoor games: bowling, football, volleyball,

The directors of all YMCA were invited to promote the sport. They organized meetings and also provided equipment and materials. The French soldiers also discovered new activities such as basketball, volleyball and baseball, totally unknown in France.