Commonly referred to as a unit crest or DUI for short, the Distinctive Unit Insignia of the 22nd Field Artillery Regiment might not be the most simple of all insignia designs, but it is most definitely in the running. It consists solely of a red shield with a canton in the upper left containing the shield from the coat of arms of the 4th Artillery Regiment, but with a red bend sinister on a gold background instead of the 4th’s gold bend sinister on a red background. The motto LABORE ET HONORE translates as "Honor And Work."
Distinctive Unit Insignias are worn by all Soldiers (except General Officers) in units that have been authorized to be issued the device. It is worn centered on the shoulder loops of the Army Green Service Uniform (AGSU) and the blue Army Service Uniform (ASU, Enlisted only) with the base of the insignia toward the outside shoulder seam. DUIs are not worn on the Dress variations of either uniform, however.
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Constituted in May 1918 as the Separate Battalion of Mountain Artillery and organized 10 July 1918, the 22nd Field Artillery Regiment did not see action until World War II, when it was designated the 22d Armored Field Artillery Battalion and assigned to the 4th Armored Division. Over the course of five campaigns in the European Theater, the Battalion earned a Presidential Unit Citation, two French Croix de Guerre with Palm, and a French World War II Fourragere. Redesignated as the 22nd Artillery in 1957, the Regiment participated in ten campaigns of the Vietnam War, with its service during 1967 – 1969 recognized with a Meritorious Unit Commendation.
The Regiment was redesignated as the 22nd Field Artillery Regiment under the United States Army Regimental System in 1988, the year it was transferred to the U.S. Army Training and Doctrine Command. As of Summer 2023, the 1st Battalion, 22nd Field Artillery Regiment is assigned to the 434th Field Artillery Brigade and is stationed at Fort Sill, Oklahoma, where it carries out Basic Combat Training.