The 307th Infantry Regiment was a National Army unit first organized for service in World War I as part of the 77th Infantry Division in Europe. It later served in the Pacific Theater during World War II. Since then it has served as a training Regiment. In 1999, it was withdrawn from the Combat Arms Regimental System and redesignated as a non-branch regiment. The regiment's 1st Battalion is assigned to the 174th Infantry Brigade at Joint Base McGuire-Dix-Lakehurst, with the 2nd Battalion is assigned to the 157th Infantry Brigade at Camp Atterbury, Indiana.