The 108th Field Artillery Regiment is represented by 1st Battalion, 108th Field Artillery. The 108th is assigned to the Pennsylvania Army National Guard's 56th Stryker Brigade Combat Team, 28th Infantry Division. The 108th comprises four Batteries, similar to a company/troop with a captain commanding each battery. Batteries A, B, and C are known as firing batteries while HSB (Headquarters and Support Battery) provides support and command to the three firing batteries.