The battalion is a subordinate unit of the 130th Field Artillery Brigade, headquartered in Manhattan, Kansas.

The 129th is notable for its service in World War I. with Battery D under the command of then-Captain Harry S. Truman, later President of the United States from 1945 to 1953.

The 129th Field Artillery was reconstituted in the National Guard on 29 July 1921, allotted to the state of Missouri, and assigned to the General Headquarters Reserve.

[1] On 27 June 1946, the unit was reconstituted in the Missouri National Guard as the 129th Field Artillery Battalion and assigned to the 35th Infantry Division.

They are additionally entitled to campaign participation credit for: The antecedent of Battery B, 1st Battalion was designated Headquarters Company, 138th Infantry Regiment, prior to and during World War II.

It is additionally entitled to campaign participation credit for: Battery B (Chillicothe), 1st Battalion, additionally entitled to: Battery D (Independence), 1st Battalion, additionally entitled to: A Gold color metal and enamel device 1+3⁄32 inches (2.8 cm) in height overall consisting of a shield blazoned: Per bend Or and Gules, in chief a prickly pear cactus Vert and in base three fleurs-de-lis in bend of the first.

The three fleurs-de-lis represent the three battle honors (Meuse-Argonne, Alsace and Lorraine) awarded the battalion for service during World War I.

That for the regiments and separate battalions of the Missouri Army National Guard: On a wreath of the colors Or and Gules, a grizzly bear standing rampant Proper.

The three fleurs-de-lis represent the three battle honors (Meuse-Argonne, Alsace and Lorraine) awarded the battalion for service during World War I.