This photo, taken between 1860 and 1870, shows a soldier holding a pistol.
A man poses in Union uniform and gloves in the mid-1860s.
In Union cavalry uniform with a cavalry saber, a soldier stands in front of a painted backdrop around 1864.
Brotherly love: Two Union soldiers put their arms around each other for the camera.
A Civil War soldier circa 1865.
Post-Civil War, a soldier dons his full regalia.
A Union soldier with his wife and two daughters.
The band of the 107th U.S. Colored Infantry.
A Union sailor.
A traveling camp photographer took this shot of a young Civil War soldier.
A buffalo soldier, Lt. 1st Infantry, in 1866.
A buffalo soldier and a young girl pose in Deadwood, S.D., between 1877 and 1890.
A World War I soldier stands before an American backdrop.
A 1942 soldier in Fort Knox, Ky., works on an army truck.