The 305th 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 In 1999, it was withdrawn from the Combat Arms Regimental System and redesignated as a non-branch regiment.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 and 2nd battalions are stationed at Camp Shelby under the command of the 177th Armored Brigade. The regiment's 3rd battalion is inactive.