Red, Yellow, Blue Shield

20th Infantry Regiment

“Tant Que Je Puis”

The U.S. Army Cadet Command established the Regimental Affiliation Program in 1985 to foster unit cohesion, camaraderie, esprit de corps, and the pride of belonging among the diverse groups of Cadets attending the Leader Development and Assessment Course from states around the nation.

Cadets attending LDAC have the unique privilege of being members of one of the Army’s finest combat units. Through the Regimental Affiliation Program, each Cadet organization is assigned to an active Army regiment. The goal of the program is to bind Cadets and cadre together in a close-knit and dynamic organizational relationship with a strong sense of teamwork so crucial to success at LDAC.

LDAC’s 4th Regiment is affiliated with the U.S. Army’s 20th Infantry Regiment. “Tant Que Je Puis.”


The 20th Infantry Regiment is a unit steeped in glory and service to the nation. Constituted May 3, 1861 in the Regular Army as the 2nd Battalion, 11th Infantry, it was organized June 6, 1862 at Fort Independence, Massachusetts.

During the Civil War this unit served in the 2nd Division of the V Corps. In that time, the regiment saw action at Peninsula, Manassas, Antietam, Fredricksburg, Chancellorsville, Gettysburg, Wilderness, Spotsylvania, Cold Harbor, Petersburg, Virginia 1862 and Virginia 1863.

Reorganized and redesignated Dec. 6, 1866 as the 20th Infantry, the 20th fought in the Indian wars, including Little Big Horn and Pine Ridge; the regiment saw service in Cuba in the war with Spain as a portion of the V Corps at El Caney and San Juan. During the Philippine Insurrection it took part in the Pasig Expedition of 1899 and campaigns in Manila and Luzon.

Assigned July 9, 1918 to the 10th Division, it was relieved Feb. 14, 1919, assigned  Sept. 18, 1920 to the 2nd Division, relieved Oct. 16, 1929 from assignment and assigned to the 6th Division (later redesignated as the 6th Infantry Division), fighting with that moniker in New Guinea and Luzon. It was inactivated Jan. 10, 1949 in Korea. Reactivated Oct. 4, 1950 at Fort Ord, California, the 20th Infantry Regiment was relieved April 3, 1956 from assignment to the 6th Infantry Division, then reorganized Nov. 15, 1957 as a parent regiment under the Combat Arms Regimental System.

During the Vietnam War, the 20th Infantry Regiment saw action in the Counteroffensive-Phase III, Tet  Counteroffensive, Counteroffensive-Phase IV, Counteroffensive-Phase V, Counteroffensive-Phase VI, Tet 1969 Counteroffensive, Summer-Fall 1969, Winter-Spring 1970, Sanctuary Counteroffensive, Counteroffensive-Phase VII, Consolidation I, Consolidation II and Cease-Fire.

It was withdrawn Aug. 16, 1986 from the Combat Arms Regimental System and reorganized under the United States Army Regimental System.