Constituted 3 May 1861 in the Regular Army as Company A, 1st Battalion, 15th Infantry

Organized 13 October 1861 at Newport Barracks, Kentucky

Reorganized and redesignated 21 September 1866 as Company A, 15th Infantry

Consolidated 12 August 1869 with Company A, 35th Infantry (see ANNEX), and consolidated unit designated as Company A, 15th Infantry

(15th Infantry assigned 17 July 1922 to the Philippine Division)

Inactivated 1 April 1929 in the Philippines

(1st Battalion, 15th Infantry, relieved 26 June 1931 from assignment to the Philippine Division; assigned 12 January 1940 to the 3d Division [later redesignated as the 3d Infantry Division])

Activated 23 May 1940 at Fort Lewis, Washington

Reorganized and redesignated 1 July 1957 as Headquarters and Headquarters Company, 1st Battle Group, 15th Infantry, and remained assigned to the 3d Infantry Division (organic elements concurrently constituted and activated)

Reorganized and redesignated 15 July 1963 as the 1st Battalion, 15th Infantry

Relieved 16 March 2004 from assignment to the 3d Infantry Division and assigned to the 3d Brigade Combat Team, 3d Infantry Division

Redesignated 1 October 2005 as the 1st Battalion, 15th Infantry Regiment

ANNEX

Constituted 3 May 1861 in the Regular Army as Company A, 3d Battalion, 17th Infantry

Organized 29 October 1865 at Hart Island, New York

Reorganized and redesignated 21 September 1866 as Company A, 35th Infantry

Consolidated 12 August 1869 with Company A, 15th Infantry, and consolidated unit designated as Company A, 15th Infantry

 

CAMPAIGN PARTICIPATION CREDIT

 

DECORATIONS

  Presidential Unit Citation (Army), Streamer embroidered SAN FRATELLO

*Presidential Unit Citation (Army), Streamer embroidered MONTELIMAR

*Presidential Unit Citation (Army), Streamer embroidered COLMAR

  Presidential Unit Citation (Army), Streamer embroidered KOWANG-NI

*Presidential Unit Citation (Army), Streamer embroidered IRAQ 2003

*Presidential Unit Citation (Navy), Streamer embroidered HWACHON RESERVOIR

*Valorous Unit Award, Streamer embroidered MADA’IN QADA, IRAQ

*Navy Unit Commendation, Streamer embroidered PANMUNJOM

*French Croix de Guerre with Palm, World War II, Streamer embroidered COLMAR

*French Croix de Guerre, World War II, Fourragere

*Republic of Korea Presidential Unit Citation, Streamer embroidered UIJONGBU CORRIDOR

*Republic of Korea Presidential Unit Citation, Streamer embroidered IRON TRIANGLE

*Republic of Korea Presidential Unit Citation, Streamer embroidered KOREA 1950-1952

*Chryssoun Aristion Andrias (Bravery Gold Medal of Greece), Streamer embroidered KOREA

  Company D additionally entitled to:

  Valorous Unit Award, Streamer embroidered IRAQ MAR-DEC 2007

 

BY ORDER OF THE SECRETARY OF THE ARMY: