 Mustered into federal service 3 June 1861 at Portsmouth as Company E, 2d New Hampshire Volunteer Infantry; mustered out of federal service 19 December 1865 at Cabin Point, Virginia.Reorganized 31 October 1865 in the New Hampshire Volunteer Militia at Concord as the State Capitol Guards.Redesignated 24 September 1866 as Company F (State Capitol Guards), 1st Regiment.