March 1970 enemy activities increase in the Ben Het- Duc Seang area. The battalion provided artillery support in the area. Battery C (-) deployed to Dak To II and Battery B remained at FSB 6. 1 April 1970 the Special Forces Camp at Duc Seang came under heavy attack from a NVA Regimental. The Battle of Duc Seang lasted three weeks. The Battalion fire missions were critical in repelling the attacks. The Battalion suffered the loss of one Forward Observer and three Forward Observers wounded. May 1970 the Battalion committed two platoons from Battery A (-) in support of the 4^th Infantry during Operation Binh Try II for the Cambodia Offensive. The platoons were airlifted to Plei Djareng and occupied four positions during the operation- LZ Dragon, LZ Spearhead, LZ Scott and LZ Wildcat.

The 1/92 Artillery marked the beginning of 1971 by moving a Platoon from Battery C (-) to Phu Nhon on January 7^th. This was to provide direct support to the 20^th Engineer Battalion, moving south of QL 14. Enemy activity in both Kontum and Pleiku Provinces continued to increase as a build up to TET, until February 1^st. Battery C at Phu Nhon received 7 rounds of 82mm mortar fire sustaining six casualties, 1 KIA and 5 WIA. The firebase was named in Honor of one of them, PFC Thomas C. Miller. On 13 February Battery B (-) dispatch one Platoon to Polei Krong to provide defensive for Battery A, 7/15 Artillery at Polei Klang. 16 February Battery C (-) moved a platoon to LZ Lonely to continue direct support to the 20^th Engineers. 26 February Battery B Platoon returned to Kontum after having successfully deterred enemy attacks on the 7/15 Artillery positions at Polei Kleng. It is noteworthy that throughout the period 16-26 January the battalion had seven separate firing positions, each maintaining its own fire direction center. Throughout this period, the 1/92 was firing between 40 and 50 percent of the rounds fired by the 52 Artillery Group, which had a total of 10 firing Batteries.

22 February 1971, Major General Charles P. Brown 1^st Field Forces Vietnam Commanding General, presented the Valorous Unit Award to the 1^st92 Artillery. The Unit was cited for Distinguishing itself through extraordinary Heroism while engaged in military operations against an armed enemy near Dak To and Ben Het, Republic of Vietnam, during the period 4 May 1969 to 28 June 1969.

Midnight on March 15 1971, the second platoon of Battery C at LZ Miller received a heavy mortar and sapper attack. The attack marked the beginning of a six-day Battle in the Phu Nhon Area. (SEE Siege at Phu Nhon, History Page) The Platoon suffered Five WIA but was credited with 34 killed by artillery, plus the credit of 52 sappers killed in their perimeter wire. Resupply was possible only from the air, as the NVA effectively blocked QL 14. During this period the 1/92 airlifted 94.3 tons of supplies into Battery C positions at FSB Miller, LZ Lonely and LZ Weight Davis. Battery C expended 1312 rounds in six days accumulating a total of 116 KIA. Battery C, Liaison Team Headquarters, Headquarters Battery received the Valorous Unit Citation for this Battle.

14 March, 1^ST LT Thacker (SEE Medal of Honor on History Page) and his four-men IOS (Integrated Observation System) team occupied FSB 6 along with the AVRN 105mm howitzer Battery. 31 March, at 0600 hours, the firebase came under heavy ground and rocket attack by two NVA Regiments. IOS team members were the last to leave FSB 6 before it was overrun. 1^st LT Thacker calling in 175mm VT rounds on his own location. IOS team, two were KIA, one was WIA and two were MIA. 1^st LT Thacker escaped, evaded the enemy for ten days, and was carried as a MIA before fighting his way back to a reoccupied FSB 6 on 9 April.

2 April the NVA launched another attack in the Phu Nhon District concentrating this time in the area of LZ Lonely. The NVA 120mm mortar had direct hits on the FDC and on one gun pit, One howitzer was rendered inoperable the platoon suffered 11 WIA and 1 KIA. QL 14 was again blocked and the Battalion airlifted a howitzer and 116 tons of resupply items into LZ Miller and LZ Lonely. Throughout the siege the artillerymen distinguished themselves by repeated acts of individual heroism.

The 1^st battalion 92nd Artillery was the only remaining U.S. medium artillery in Military Region II in 1971. Although it originally consisted of the normal three firing batteries configuration, only two firing batteries remained. Battery C stood down under Keystone Increment VIII on 15 August 1971.The mission of the Battalion was general support of U.S. and ARVN Forces throughout Military Region II. In support of this, each firing element was assigned an individual mission. The disposition and individual missions were: (1) Battery A (-), with four howitzers, was on Artillery Hill and had the mission of general support to the Pleiku Area. (2) Battery A Platoon, with two howitzers, was at recon support base action, to the East of Pleiku. Its mission was the direct support of Task Force 19, which had the general mission of securing the highway communications along QL 19. This was the main artery to the Central Highlands Area. (3) Battery B, with six howitzers, was further East, at LZ Buffalo in An Khe, and the mission of direct support to Task Force 19.

The Battalion operated three fire direction centers, one at each firing location. The Battalion Tactical Operations Center did not maintain a fire direction center at this time: however, the Battalion TOC did retain ultimate tactical control of all battalion fires. The primary means of computing firing data throughout the Battalion was through the M18 Fire Direction Computer, or FADAC. The Battalion had four such computers, all of which were operational. The 1/92 was responsible for operating two artillery and airstrike warning control centers, called air advisories. The function of these two centers was to provide information to all aviators regarding friendly artillery and air strikes that might affect aircraft safety. The warning centers were located on Artillery Hill and in An Khe at FSB Buffalo. The former provided information for all of Pleiku Province, the latter served aviators flying over western Binh Dinh Province, the air link between the Central Highlands and the Coastal regions to the East.

The Battalion had one Liaison section deployed. This was a relatively permanent section that provided liaison with Task Force 19 at An Khe. The battalion was also constantly prepared to support any operation in its tactical area of operations with either liaison or forward observer teams when notified.

The 1/92 conducted many artillery raids. It was constantly ready to deploy platoons in support of any operation to conduct either pre-planned or hasty raids as required by the situation.

Redesignated 1 September 1971 as the 1^st Battalion, 92d Field Artillery. On 2 November the Unit was returned to Fort Hood Texas and reorganized 30 November 1971 in the wake of the inactivation of the 6^th Battalion, 92d Field Artillery. It was also reorganized from a composite 155/8" Unit to a pure 8" Battalion and it again became part of the 2d Armored Division.

July 1986 the 1st Battalion 92d Artillery was inactivated, except for Battery C, which was redesignated as A/92^nd Artillery Regiment under The United States Army Regimental System. (The Unit was changed from 8" guns to MLRS).

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