Organized at Great Neck and mustered in June 22, 1861. Left State for Washington, D. C., July 18. Attached to Stone's Brigade, Division of the Potomac, October, 1861. Gorman's Brigade, Stone's Division, Army of the Potomac, to January, 1862. Burns' Brigade, Sedgwick's Division, Army of the Potomac, to March, 1862. 3rd Brigade, 2nd Division, 2nd Army Corps, Army of the Potomac, to March, 1864. 1st Brigade, 2nd Division, 2nd Army Corps, to July, 1864.