After the war, the battalion was deactivated and reactivated during various Army reorganizations, finally reemerging with its lineage part of the 333rd Field Artillery Regiment.

In January and February 1919, the regiment returned to the United States and was demobilized at Camp Grant, Illinois.

It was reconstituted in the Organized Reserve on 13 September 1929, assigned to the 86th Division, and allotted to the Sixth Corps Area.

The primary ROTC "feeder school" was the University of Chicago, and the regiment usually conducted summer training at Camp McCoy, Wisconsin.

[1] As was typical of segregated units in World War II, white officers commanded black enlisted men.

On 5 August 1942, the 333rd Field Artillery Regiment was activated as a colored (segregated) unit at Camp Gruber, Oklahoma, and assigned to the U.S. Third Army.

In the early morning hours of 16 December, German artillery began shelling the Schönberg area.

Service Battery tried to displace to St. Vith through the village, and was hit by heavy German armored vehicle and small arms fire.

They were by this time on the east side of the river, and had to sneak their way overland in a northwesterly direction, hoping they would reach American lines.

[5] As prisoners of war, the American soldiers should have been protected under the terms of the Geneva Conventions, of which Germany was a signatory.

In 1946, Knittel was sentenced to life imprisonment at the Malmedy massacre trial for ordering illegal executions of several American prisoners of war during the Battle of the Bulge.

On 23 May 2004, a new memorial was built on the site of the executions and was dedicated to the 11 troops as well as all the African-American soldiers who had fought in the European theater.

[7] In 2006, members of the Worcester, Massachusetts, chapter of Veterans of the Battle of the Bulge dedicated the first memorial to the Wereth 11 on United States soil.

The 333rd Field Artillery Group served in the Rhineland and Central Europe campaign to the end of the war.