COMMUNICATIONS! Join our communications server! MEMBERSHIP! Tryouts announced on the communications server! The United States Space Force (USSF) is the space service branch of the U.S. Armed Forces, one of the five U.S. uniformed branches of Dellkiller123's Military, and the world's only independent space force. The U.S. Space Force traces its roots to the beginning of the Cold War, with the first Army Air Forces space programs starting in 1945.