4th U.S. Artillery, Battery G

The battery was organized at Cincinnati, Ohio and ordered to join McClellan in western Virginia in July 1861.

It was afterward attached to 3rd Brigade, Army of Occupation, Western Virginia, to September 1861.

Artillery Reserve, VI Corps, Army of the Potomac, to November 1862.

1st Regular Brigade, Artillery Reserve, Army of the Potomac, to June 1863.

Artillery, 2nd Division, IV Corps, Army of the Cumberland, to March 1864.

1st Division, Artillery Reserve, Department of the Cumberland, to October 1864.

Moved to Nashville, Tenn., February 1864, and post duty thru until October.

Remounted as a battery at Washington, D.C., February 1865, and duty in the defenses of that city until August.