325th Brigade Support Battalion
325th Forward Support Battalion

In 2005, as part of the Army's transformation towards a modular force, 325th Forwad Support Battalion was inactivated and relieved from assignment to the 25th Infantry Division. As part of the modular transformation, various support assets that had previously been held at division level, but habitually attached to a division's brigades during operations, were made organic to those brigades. 325th Forward Support Battalion was reorganized and redesignated as the 325th Brigade Support Battalion. It was subsequently reactivated and assigned to the reorganized and redesignated 3rd Brigade Combat Team, 25th Infantry Division. The 25th Infantry Division Support Command (DISCOM) was also inactivated as part of the transformation.

The 325th Brigade Support Battalion was first constituted on 26 August 1941 in the Army of the United States as the 25th Medical Battalion. It was assigned to the 25th Infantry Division and activated on 1 October 1941 at Schofield Barracks, Hawaii. Members of the Battalion supported the Division at the time of the attack on Pearl Harbor. The Battalion deployed to Guadalcanal in November 1942 and later provided support throughout the Pacific for the remainder of World War II. It participated in 4 campaigns: Central Pacific, Guadalcanal, Northern Solomons, and Luzon.

On 27 June 1949, the Battalion was alloted to the Regular Army unit and in July 1950 deployed to the Korean Peninsula to support the Division in all major campaigns against the North Korean Communist forces. These included: UN Defensive, UN Offensive, CCF Intervention, First UN Counteroffensive, CCF Spring Offensive, UN Summer-Fall Offensive, Second Korean Winter, Korea, Summer-Fall 1952, Third Korean Winter, and Korea, Summer 1953.

In 1966, the Battalion moved to the Republic of Vietnam where it served meritoriously before returning to Hawaii. There it served in the following campaigns: Counteroffensive, Counteroffensive Phase II, Counteroffensive Phase III, Tet Counteroffensive, Counteroffensive Phase IV, Counteroffensive Phase V, Counteroffensive Phase VI, Tet 69/Counteroffensive, Summer-Fall 1969, Winter-Spring 1970, Sanctuary Counteroffensive, and Counteroffensive Phase VII.

The 25th Medical Battalion was converted and redesignated on 16 April 1992 as the 325th Support Battalion (Forward).

The 325th Forward Support Battalion was relieved on 16 November 2005 from assignment to the 25th Infantry Division and assigned to the 3rd Brigade Combat Team, 25th Infantry Division. This was as part of the transformation of the 25th Infantry Division to the US Army's modular force structure. As a result, support assets previously held at division level, but habitually assigned to the Division's brigades were made organic to those brigades. The 25th Infantry Division Support Command was also inactivated.