12th Regiment U.S. Infantry, Co A.
- Organized by direction of the President, May 4, 1861
- Moved to Washington, D.C., March 5, 1862
- Attached to SYKES REGULAR INFANTRY,
- Confirmed by act of Congress, July 29, 1861
- Organized at Fort Hamilton, Brooklyn, New York Harbor
- Reserve Brigade, ARMY of the POTOMAC to May 1862
- 1st Brigade, 2nd Division, 5th Army Corps to August, 1863
- Dept. of the East to September, 1863
- 1st Brigade, 1st Division, 5th Army Corps to March, 1864
- 1st Brigade, 2nd Division, 5th Army Corps to November, 1864
- Dept. of the East to July, 1865
SERVICE
- 1862
- Virginia Peninsula, March 1862.
- Siege of Yorktown, April 4 - May 4
- Seven Days before Richmond, June 25 - July 1
- Battle of Mechanicsville, June 26
- Gaines Mill, June 27
- Turkey Bridge, June 30
- Malvern Hill, July 1
- At Harrisons Landing till August 16. Movement to Fortress Monroe, then to Centreville, August 16 - 28
- Pope's Campaign in Northern Virginia, August 28 - September 2
- Battles of Groveton, August 29
- Bull Run, August, 30
- Maryland Campaign September 6-22
- Battle of Antietam, September 16-17
- Shepherdstown Ford, September, 19 - 20
- At Sharpsburg, Maryland till October 29.
- Kearneysville and Shepherdstown, October 16 - 17 Movement to Falmouth, Virginia, October 29 -November19
- Battle of Fredericksburg, Virginia, December 12 - 15
- 1863
- "Mud March", January 20 - 24.
- Chancellorsville Campaign, April 27 - May 6 Battle of Chancellorville, May 1 - 5.
- Gettysburg, Pennsylvania Campaign, June 11 - July 24 Battle of Gettysburg, July 1 - 3 Pursuit of Lee, July 5 - 24th
- Moved to New York City, August 16 - 19 (Cos. "F" and "H", 2nd Battalion, in New York most of July 1863)
- Duty in New York till September 14, Rejoined army in Culpeper, Va., September 22
- Bristoe Campaign, October 9 - 22. Advance to the line of the Rappahannock, November 7 - 8
- Mine Run Campaign, November 26 - December 2
- 1864
- Rapidan Campaign: Battles of the Wilderness, May 5 - 7
- Spotsylvania Court House, May 8 - 21
- North Anna River, May 22 - 26
- On the line the Pamunkey, May 26 - 28. Totopotomoy, May 28 - 31
- Cold Harbor, June 1 - 12
- Bethesda Church, June 1 - 3
- Before Petersburg, June 6 - 18. Siege of Petersburg, June 6 November 2
- Mine Explosion, Petersburg, July 30 (reserve)
- Weldon Railroad, August 18 - 21
- Poplar Springs Church, Peeble's Farm, September 29 - October 2
- Boydton Plank Road, Hatchers Run, October 27 - 28
- Moved to New York, November 2 - 6
- 1st battalion on duty at Elmira, N.Y. and 2nd Battalion Fort Hamilton N.Y. till July 1865.
Last Updated on 3/29/04
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