The regiment marched to Munson's Hill on October 30, and Hunting Creek the next day, where it stayed until November 26.

It was drawing near Gettysburg on July 1, when the 12th and 15th regiments were detached to guard the corps trains.

The two regiments accompanied the corps trains to Rock Creek Church, near the battlefield.

The regiment marched to Harper's Ferry, across South Mountain again, and camped near Petersville, near Berlin (present-day Brunswick).

It reached New York City on July 20, spent two uneventful days there during the Draft riots, then continued on to Brattleboro, where it mustered out on August 5.