 The Gap also served as a demobilization site for many units returning home from the European Theater of Operations after the war ended.From 1951 to 1953, during the Korean War, the Gap’s strategic role again surfaced when it became the home of the 5th Infantry Division, whose mission was to train 32,000 troops as replacements for assignment to Korea.During the late 1960s and early 1970s, during the Vietnam War, Fort Indiantown Gap served as one of the largest Reserve Officers Training Corps (ROTC) summer camps for the U.S. Army.