503d Infantry
(The Rock Regiment)
Lineage and Honors Information as of 7 March 2001
503d Infantry Lineage
Constituted 24 February 1942 in the Army of the United States as the 503d Parachute Infantry (1st Battalion concurrently consolidated with the 503d Parachute Battalion [constituted 14 March 1941 in the Army of the United States and activated 22 August 1941 at Fort Benning, Georgia] and 2d Battalion consolidated with the 504th Parachute Battalion [constituted 14 March 1941 in the Army of the United States and activated 5 October at Fort Benning, Georgia] and consolidated units designated as the 1st and 2d Battalion, 503d Parachute Infantry)
Regiment (less 1st, 2d, and 3d Battalions) activated 2 March 1942 at Fort Benning, Georgia
(3d Battalion activated 8 June 1942 at Fort Bragg, North Carolina)
(2d Battalion reorganized and redesignated 2 November 1942 as the 2d Battalion, 509th Parachute Infantry - hereafter separate lineage; new 2d Battalion, 503d Infantry, concurrently activated in Australia)
Regiment inactivated 24 December 1945 at Camp Anza, California
Redesignated 1 February 1951 as the 503d Airborne Infantry, allotted to the Regular Army, and assigned to the 11th Airborne Division
Activated 2 March 1951 at Fort Campbell, Kentucky
Relieved 1 March 1957 from assignment to the 11th Airborne Division; concurrently reorganized and redesignated as the 503d Infantry, a parent regiment under the Combat Arms Regimental System
Withdrawn 16 December 1986 from the Combat Arms Regimental System and reorganized under the United States Army Regimental System
503d Infantry Honors
Campaign Participation Credit
World War II: New Guinea; Leyte; Luzon (with arrowhead); Southern Philippines
Vietnam: Defense; Counteroffensive; Counteroffensive, Phase II (with arrowhead); Counteroffensive, Phase III; Tet Counteroffensive; Counteroffensive, Phase IV; Counteroffensive, Phase V; Counteroffensive, Phase VI; Tet 69/Counteroffensive; Summer-Fall 1969; Winter-Spring 1970; Sanctuary Counteroffensive; Counteroffensive, Phase VII; Consolidation I
Decorations
Presidential Unit Citation (Army) for CORREGIDOR
Presidential Unit Citation (Army) for BIEN HOA
Presidential Unit Citation (Army) for PHUOC VINH
Presidential Unit Citation (Army) for DAK TO
Presidential Unit Citation (Navy) for VIETNAM 1966
Valorous Unit Award for TUY HOA
Meritorious Unit Commendation (Army) for VIETNAM 1965-1967
Philippine Presidential Unit Citation for 17 OCTOBER 1944 TO 4 JULY 1945