After training at Camp Gordon until May 1918, the battery shipped to France, and participated with the regiment in the St. Mihiel, Meuse Argonne and Lorraine 1918 campaigns.

[1] The battalion began February 1968 near LZ El Paso near Phu Bai in the I Corps Tactical Zone, in direct support to 2d Brigade, which was under the Operational Control of the 1st Air Cavalry Division.

On 18 March 1968 at 0400 hours, elements of Battery B repulsed an enemy ground attack against FSB Minky with direct and indirect fire, killing 30 NVA.

[2] The 1-321 began May 1968 supporting 2d Brigade in Operation Carentan II, with batteries located at FSBs Mongoose, Omaha and Birmingham.

On 4 July 1968, Battery A moved by road to Camp Eagle to fire a 50-gun salute and returned to FSB Mongoose.

During the quarter, the battalion transferred 70 soldiers (officers, section chiefs, FDC personnel and other specialists) to 2-320 FA, which had been deployed with 1st Brigade since 1965 to sustain Battery D, 2-320, a provisional battery created to support 1st Brigade's fourth maneuver battalion, 3-506 Infantry.

On 19 August 1968, LTC George E. Peters, the battalion commander, was wounded by enemy artillery that scored at direct hit on the 2d Brigade TOC at FSB Georgia.

On 18 September 1968, Battery A, 2-319, returning to the 101st from operations with the 25th Infantry Division, closed at Camp Eagle and began reinforcing the battalion.

On 1 August 1969, Battery C moved four howitzers from Camp Eagle to FSB Birmingham after firing a salute for General Smith at the change of command of the Division Artillery to COL Howard Moore.

On 11 August, Battery B moved by air to FSB Brick for an artillery raid named Operation CAISSON XIV.

On 4 September 1969, LZ Sally was attacked with RPGs and mortars- Battery C participated in countermortar fires with unknown results on the enemy.

On 7 September, while moving from FSB Anne to Camp Evans, Battery lost two A22s when a foot strap broke.

The combined unit fired 890 rounds at 80 targets in the central and northern A Shau Valley, resulting in the destruction of 15 bunkers and huts and causing six secondary explosions before returning by air to FSB Bastogne on 10 November 1969.

The raid destroyed 17 bunkers, six huts, three fighting positions and two bridges; caused two secondary fires; and interdicted five infiltration routes.

[6] In October 1986, as part of redesignations to implement the U.S. Army Regimental System, 1-321 FAR was inactivated and relieved from assignment to the 101st Airborne Division.

[7] Note: Separately cited awards are not listed by the official Army lineage and honors, last updated 2 October 2008.