Organized at Brattleboro and mustered in February 12, 1862, to date from June 1, 1861. Left State for New York March 10, 1862. Embarked March 14 for Ship Island, Miss., right wing on Steamer "Premier," and left wing on Steamer "Tamerlaine," arriving at Ship Island April 7 and 10. Attached to Phelps' 1st Brigade, Dept. of the Gulf, to October, 1862. District of West Florida to December, 1863. Defences of New Orleans, Dept. of the Gulf, to November, 1864. 2nd Brigade, Reserve Division, Dept. of the Gulf, to February, 1865. 2nd Brigade, 3rd Division, 13th Army Corps, Dept. of the Gulf, to June, 1865. Dept. of Texas to March, 1866.
Duty at Ship Island, Miss., till May 13, 1862. (Cos. "B," "C" and "D" detached at Fort Pike May 5 to June 13.) Regiment moved to New Orleans, La., May 13-16. At Carrollton till June 15. Moved to Baton Rouge June 15-16. Expedition from Baton Rouge to Vicksburg, Miss., and operations against Vicksburg June 20-July 26. Hamilton's Plantation, near Grand Gulf, June 24. Battle of Baton Rouge August 5. Evacuation of Baton Rouge August 20. Duty at Carrollton till October 13. Ordered to Pensacola, Fla., October 13, and garrison duty there till February 20, 1863. Reconnoissance to Oakfield December 29, 1862. Garrison, Forts Barrancas and Pickens, till June 19, 1863. Expedition to Oakfield February 17, 1863. Duty at Barrancas and at Santa Rosa Island till August, 1864. Near Point Washington February 9, 1864 (Co. "B"). Expedition from Barrancas toward Pollard, Ala., July 21-25, 1864. Gonzales Station July 22. Old members mustered out August 10, 1864. Veterans absent on furlough August 10 to September 27. Left State for Dept. of the Gulf September 30. Sailed from New York to New Orleans, La., October 4, arriving October 13. Duty at New Orleans till February 19, 1865. Moved to Mobile Point, Ala., February 19. Campaign against Mobile and its Defences March 17-April 12. Siege of Spanish Fort and Fort Blakely March 26-April 8. Fort Blakely April 9. Occupation of Mobile April 12. Action at Whistler's Station April 13. Expedition to McIntosh Bluff on Tombigbee River April 19-May 9. At Mobile till June 2. Moved to Brazos Santiago, Texas, June 2-5; thence to Clarksville June 14, and duty there till August 2, and at Brownsville till March, 1866. Mustered out March 14, 1866.
Regiment lost during service 3 Officers and 10 Enlisted men killed and mortally wounded and 4 Officers and 403 Enlisted men by disease. Total 420.