Organized at Philadelphia September 19, 1861. Left State for Washington, D. C., September 24. Attached to Steinwehr's Brigade, Blenker's Division, Army Potomac, to March, 1862. 2nd Brigade, Blenker's Division, 2nd Army Corps, Army Potomac, to April, 1862. 2nd Brigade, Blenker's Division, Dept. of the Mountains, to June, 1862. 2nd Brigade, 1st Division, 1st Corps, Army of Virginia, to September, 1862. 1st Brigade, 2nd Division, 11th Army Corps, Army of the Potomac, to October, 1863, and Army of the Cumberland to April, 1864. 2nd Brigade, 2nd Division, 20th Army Corps, to July, 1865.