Statistics for occurrence #1 of “Washington, D. C.” in chapter 32, regiment OH116 of Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories:

...er, Opaquan Creek September 19. Fisher's Hill September 22. Cedar Creek October 13. Battle of Cedar Creek October 19. Duty at Opequan Crossing November 18 to December 19. Moved to Washington, D. C. , December 19; thence to Aiken's Landing, Va. Siege of Petersburg and Richmond December 27, 1864, to April 2, 1865. Appomattox Campaign March 28-April 9. Hatcher's Run March 29-April 1. ...
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