Total Men: 919
Casualties (Killed or Mortal Wound): 30
Organization: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.
Service:Moved from Carrollton to Camp Parapet, La., January 28, 1863, and duty there until 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 15th was involved in 1 engagement.
All casualties occured at the Siege of Port Hudson -30.
The 15th never recieved recruits to replenish
the units strength.