The battalion is based in Bristol, Pennsylvania and its primary weapon system is the M777 howitzer with a maximum effective range of 30 km.

On the morning of 31 January, elements of 1st Battalion, 25th Marines cleared the islet of Ennuebing, southwest of Roi-Namur in the Kwajalein Atoll.

[4] On 12 May 1944, all of 14th Marines, including 3d Battalion, embarked on board USS Leonard Wood and stopped at Pearl Harbor before setting sail towards Saipan in the Northern Mariana Islands in order to participate in Operation Forager.

By 2:45 pm, 3d Battalion had pushed 50 yards inland of Yellow Beach 2 and began firing in support of the 25th Marine Regiment.

Battery H had just occupied an exposed firing position, having received multiple shelling which significantly wounded one cannoneer, Sgt.

The 8-gun battery's 1000m by 700m position was on the far side of the second obstacle belt, well in front of the tank and infantry maneuver units it supported, with the burning Burqan oil field to its immediate east.

On battery's east flank piece (Gun #1) Gunner Sgt Shawn Toney and Section Chief Sergeant Thomas Stark, IV, spotted two enemy multiple rocket launchers as they were shifted trails to fire to the south.

Jay Sollis, 1/11 Commander, arrived in the battery position, requested air support and directed a section of AH-1W Sea Cobra to engage the Iraqi counterattack force in the oil field.

A security patrol, which included Lance Corporal Troy L. Gregory of Battery H, was organized to investigate an enemy bunker adjacent to the new CP position.

He was posthumously awarded the Purple Heart Medal and Combat Action Ribbon and was laid to rest at Arlington National Cemetery in section 60, Grave 7723.

In 2004, Mike Battery, out of Chattanooga, Tennessee deployed to Fallujah, Iraq and took part in Operation Phantom Fury to re-take the insurgent-held city.

During this second deployment, they were attached to 2nd Light Armored Reconnaissance Battalion, Regimental Combat Team 5 and operated in the vicinity of Ar Rutbah under the callsign, "Excalibur" Palehorse.

[19][20] The Battery Commander during the shootings, Major Mike Abrams, declared during the memorial service that his Marines "were selfless in their efforts to take care of one another, and they acted with unquestionable courage.

"[21] MajGen Paul W. Brier, Commanding General of the 4th Marine Division, spoke at the nationally televised press conference held in Chattanooga on 22 July 2015.