Constituted 3 May 1861 in the Regular Army as the 1st Battalion, 14th Infantry

Organized 8 July 1861 at Fort Trumbull, Connecticut

Redesignated 30 April 1862 as the 2d Battalion, 14th Infantry

Reorganized and redesignated 21 September 1866 as the 23d Infantry

Assigned 22 September 1917 to the 2d Division (later redesignated as the 2d Infantry Division)

Relieved 20 June 1957 from assignment to the 2d Infantry Division and reorganized as a parent regiment under the Combat Arms Regimental System

Withdrawn 21 January 1983 from the Combat Arms Regimental System and reorganized under the United States Army Regimental System

23d Infantry Honors

Campaign Participation Credit

Civil War: Peninsula; Manassas; Antietam; Fredericksburg; Chancellorsville; Gettysburg; Wilderness; Spotsylvania; Cold Harbor; Petersburg; Virginia 1862; Virginia 1863

Indian Wars: Little Big Horn; Arizona 1866; Idaho 1868;

War with Spain: Manila

Philippine Insurrection: Manila; Malolos; Mindanao; Jolo; Jolo 1903

World War I: Aisne; Aisne-Marne; St. Mihiel; Meuse-Argonne; Ile de France 1918; Lorraine 1918

World War II: Normandy; Northern France; Rhineland; Ardennes-Alsace; Central Europe

Korean War: UN Defensive; UN Offensive; CCF Intervention; First UN Counteroffensive; CCF Spring Offensive; UN Summer-Fall Offensive; Second Korean Winter; Korea, Summer-Fall 1952; Third Korean Winter; Korea, Summer 1953

Vietnam: Counteroffensive; Counteroffensive, Phase II; 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

Decorations

Presidential Unit Citation (Army) for BREST, FRANCE

Presidential Unit Citation (Army) for WIRTZFELD, BELGIUM

Presidential Unit Citation (Army) for KRINKELTER WALD, BELGIUM

Presidential Unit Citation (Army) for ST. VITH

Presidential Unit Citation (Army) for TWIN TUNNELS

Presidential Unit Citation (Army) for CHIPYONG-NI

Presidential Unit Citation (Army) for HONGCHON

Valorous Unit Award for SAIGON

Valorous Unit Award for TAY NINH PROVINCE

French Croix de Guerre with Palm, World War I for CHATEAU THIERRY

French Croix de Guerre with Palm, World War I for AISNE-MARNE

French Croix de Guerre with Palm, World War I for MEUSE-ARGONNE

French Croix de Guerre, World War I, Fourragere

Belgian Fourragere 1940

Cited in the Order of the Day of the Belgian Army for action in the Ardennes

Cited in the Order of the Day of the Belgian Army for action at Elsenborn Crest

Republic of Korea Presidential Unit Citation for NAKTONG RIVER LINE

Republic of Korea Presidential Unit Citation for KOREA 1950-1953

Republic of Korea Presidential Unit Citation for KOREA 1952-1953