The 131st regiment was recruited in the counties of Northumberland, Lycoming, Mifflin, Union and Snyder and mustered in at Harrisburg early in Aug., 1862, for nine months. It was ordered to join the 3d provisional brigade in Virginia, but was soon transferred to the force at Alexandria, and at the opening of the Maryland campaign, made a part of the 3d division, 5th corps. It reached Antietam too late to participate in the battle and went into camp at Sharpsburg. Fredericksburg was the first battle of the regiment and it made a desperate charge to within 30 feet of the celebrated stone wall, losing in an hour and one-half 177 killed, wounded and missing, the men fighting with the steadiness of veterans. Winter quarters were established near Falmouth with no event of importance, except Burnside's second attempt in Jan., 1863, which was rendered futile by the impassable roads. On May 3, the regiment was warmly engaged at Chancellorsville and after the battle returned to its former camp. Its term of service expired on May 15, and it was then ordered to Harrisburg where it was mustered out on the 23rd. The Regiment lost during service 2 Officers and 36 Enlisted men killed and mortally wounded and 1 Officer and 44 Enlisted men by disease. Total 83.