This regiment was from the 1st Congressional district and was the first in the state to respond to the call for nine months' men. It was mustered into the U. S. service at Concord, from Oct. 4 to Nov. 12, 1862, and was mustered out at Concord, Aug. 13, 1863. It numbered 919 men, of whom 30 were killed or died of wounds and 115 from other causes. The regiment left the state for New York on Nov. 13 and embarked from Brooklyn two weeks later for New Orleans where it encamped on the Shell road at Carrollton. From May 27 to July 9, 1863, the 15th took part in the siege of Port Hudson, La., engaging in active combat and in many laborious siege duties. After the surrender, it was ordered north and returned to Concord.
Regiment lost during service 27 Enlisted men killed and mortally wounded and 134 Enlisted men by disease. Total 161.
Col., John W. Kingman ; Lieut.-Cols., William M. Weed, George W. Frost, Henry W. Blair; Majs., George W. Frost, Henry W. Blair, John Aldrich.
Organized at Concord October 6-16, 1862, for nine months' service. Left State for New York November 13, 1862; thence sailed for New Orleans, La., December 19, arriving December 26. Attached to Sherman's Division, Dept. of the Gulf, to January, 1863. 1st Brigade, 2nd Division, 19th Army Corps, Army of the Gulf, to July, 1863. 2nd Brigade. 3rd Division, 19th Army Corps, to August, 1863.
Moved from Carrollton to Camp Parapet, La., January 28, 1863, and duty there till May. Moved to Springfield Landing May 20-22. Siege of Port Hudson, La., May 27-July 9. Assaults on Port Hudson May 27 and June 14. Surrender of Port Hudson July 9. Moved to Concord, N. H., July 26-August 8, and mustered out August 13, 1863.
The compiled service records of this unit contains 917 men.
Dyer, Frederick H. - A Compendium of the War of the Rebellion