Following the Civil War, the Army was reorganized by Congress in July 1866, and the 11th was divided into three regiments, each battalion receiving two additional companies and being organized along traditional lines.

The regiment remained in Camp Shelby, Mississippi demobilizing troops returning from overseas.

In 1919, the 29th arrived at Fort Moore and immediately assumed the duties of the support and demonstration regiment for the then-new Infantry School.

For eight years the men of the 29th lived in tents while they built the Cuartel Barracks, Gowdy Field, and Doughboy Stadium, among other things.

Three months later the regiment moved to Iceland, where it defended the rocky coastline until shipped to England in preparation for the invasion of Europe.

In August, 1944 the regiment deployed to France where it provided security to the "Red Ball Express", the supply route which kept the armored thrust rolling into Germany.

The 29th served in the Army of occupation at Frankfurt on Main and then in the Bremen Enclave near Bremerhaven at Camp Grohn.

The 1st and 3rd Battalions suffered heavy losses during fighting in the vicinity of Chinju, Masan, and during the establishment of the Pusan perimeter in the Korean War.

[2] Battery C (Composite), 83d Field Artillery, was activated on 21 March 1973 and attached to the 1st Battalion, 29th Infantry.

The 1,300 officers, non-commissioned officers, soldiers, and civilians assigned to 1st and 2nd Battalion provide instruction in courses that train privates to colonels on and in a wide variety of subjects and equipment; subject matter expertise for the development and evaluation of new doctrine and equipment; support Reserve Component units in their periodic training; provide troops, vehicles, and equipment to support Infantry School resident instruction; and have prepotency for a variety of field manuals.