Founded during World War II, the USO sought to be the GI's "home away from home" and began a tradition of entertaining the troops and providing social facilities. Involvement in the USO was one of the many ways in which the nation had come together to support the war effort, with nearly 1.5 million people having volunteered their services in some way. The USO initially disbanded in 1947, but was revived in 1950 for the Korean War, after which it continued, also providing peacetime services. During the Vietnam War, USO social facilities ("USOs") were sometimes located in combat zones.