[3] It was from various sources, including units of the Pennsylvania National Guard which had fought in the Spanish–American War, and served in the Mexican Expedition, that the regiment was formed.

Redesignated 1 April 1921 as the 107th Field Artillery and assigned to the 28th Division; Headquarters federally recognized 22 June 1921 at Pittsburgh.

In December 2003 the 1st Battalion, 107th Field Artillery Regiment, was activated and received Military Police training at Fort Dix, New Jersey.

In late March 2004 C Battery was notified of a move to Camp Fallujah during Operation Valiant Resolve in the spring campaign during which C Battery lost 2 of its Members Sgt Carl Curran (Union City, PA) and SPC Mark Kasecky (McKees Rocks, PA) IED attack which also injured Sgt Robert Emerick (Pittsburgh, PA) Members of C Battery also saw combat in the area surrounding Camp Anaconda and Abu Ghraib, a military prison.

C Battery carried on another important mission with Navy Seal teams 1 and 2 west coast providing PSD (Personal Security Detail) on the Iraqi President.

Another contingent provided security for Ambassador Paul Bremer and other high-ranking State Department officials at Coalition HQ.

1st Platoon, located on Logistics Support Area Diamondback (Mosul Air Base), finished construction of the military detention facility and continued to run it until re-deployment.

2nd Platoon provided external base security for the detention facility, a quick reaction force for the company and an additional security detachment for top military officials in Iraq including the Task Force Olympia's Commanding General, Deputy Commander, Provost Marshal and various VIPs at Camp Freedom.

The coat of arms was originally approved for the 107th Field Artillery Regiment, Pennsylvania National Guard on 17 June 1929.