Organized May 20, 1864. Sailed from Gallop's Island for Washington, D.C., June 23, 1864 and garrison duty in the Defenses of that city until August, 1864. Attached to 3rd Brigade, Hardin's Division 22nd Army Corps, Dept. of Washington, June to August, 1864. Assigned to
3rd Heavy Artillery
August 1864, as Company "L."