The 3rd New Hampshire finished the war in North Carolina and were mustered out of Federal service on July 20, 1865, arriving back in Concord on the 28th for final discharge and payment.

After being mustered in, the 3rd New Hampshire left for Long Island, New York, encamping at Camp Winfield Scott at Hempstead Plains.

From here, they went to Washington, D.C. and Annapolis, Maryland where the regiment embarked on the steamer Atlantic for the assault on Hilton Head, South Carolina.

The regiment lost another eight in a second failed assault which took place July 18, 1863, led by Captain James F. Randlett.

Only 180 men remained of the thousand who had left Concord three years prior[3] In January 1865, the 3rd New Hampshire also took part in the successful attack on Fort Fisher in North Carolina.