1st Maryland Light Artillery, Battery D

1864
February 29	Organized at Baltimore, Md. Attached to 3rd Separate Brigade, 8th Army Corps, Middle Department for duty in the Defenses of Baltimore, Md.
June	In the Defenses of Washington south of the Potomac. Stationed at Forts Tillinghast, Lyon, Willard, Richardson, Ward, Barnard, C. F. Smith and Whipple. Assigned to 3rd Brigade, DeRussy's Division, 22nd Army Corps, Defenses of Washington, D.C.
June	Assigned to 4th Brigade, DeRussy's Division, 22nd Army Corps
October	Assigned to 3rd Brigade, DeRussy's Division, 22nd Army Corps
1865
February	Assigned to 1st Brigade, DeRussy's Division, 22nd Army Corps
June 24	Mustered out