The Distinctive Unit Insignia of 108th Field Artillery Regiment was originally approved on 15 October 1926. It was redesignated for the 108th Field Artillery Battalion in July 1943; for the 108th Artillery Regiment, Pennsylvania National Guard in August 1961; and for the 108th Field Artillery Regiment, Pennsylvania Army National Guard in July 1972. The insignia was cancelled in May 1979, but was then reinstated effective 1 September 1997 for the unit’s current designation. The only change since that time has been an amendment to correct the description on 23 August 2006.
While the 108th is currently designated as Field Artillery, the first sixty-plus years of its existence saw it serving as Infantry, a heritage denoted by the use of blue throughout its unit crest. The Field Artillery color of red is used only on the lozenge containing the golden lion and for the keystone signifying the unit’s home state of Pennsylvania (also a reference the 28th Infantry Divions). At the apex of the shield is a fasces taken from the emblem the organization adopted when it was organized as an Infantry company in 1840.
Three charges found on the upper of the three chevrons stand for the badges the Regiment’s personnel wore in the Civil War while serving in the 2nd Division, I Corps (annulet/circle), 2nd Division, III Corps (mascle/lozenge), and 3rd Division, V Corps, Army of the Potomac (cross patée). The top chevron represents the Potomac, the bottom the Marne. A rampant lion signifies service done during World War I while under the command of the King of Belgium. NON SIBI SED PATRIAE, the unit motto, is Latin for "Not Self But Country."
Full guidance on wear of the DUI is found in DA Pamphlet 670-1, Section 21-22, "Distinctive unit insignia" and 21–3(d) and (e), "Beret" and "Garrison Cap," respectively.
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The 108th Field Artillery began its service life with the organization of the National Guards in the Pennsylvania Militia on 11 December 1840. During the Civil War, the unit was mustered into Federal Service twice under the designations 19th Pennsylvania Volunteer Infantry Regiment and the 90th Pennsylvania Volunteer Infantry Regiment, earning credit for participation in ten campaigns. The arrival of World War I saw the Regiment called into Federal service as the 108th Field Artillery and assigned to the 28th Division, the unit with which it would fight in five campaigns.
In February 1942, the Regiment was broken up and some units relieved from assignment to the 28th Infantry Division, with the units that retained the 108th Field Artillery lineage fighting in five World War II campaigns; in Korea, the Regiment’s units would take part in two campaigns and earn a Meritorious Unit Commendation. The Regiment would retain its affiliation with the 28th Infantry Division following reorganizations under the Combat Arms Regimental System in 1959 and the U.S. Army Regimental System in 1988. The War on Terrorism marked the Regiment’s return to combat after five decades as it took part in the Iraqi Sovereignty and earned another Meritorious Unit Commendation.
As of Summer 2023, the Regiment’s only active unit, the 1st Battalion, is assigned to the 56th Stryker Brigade Combat Team.