123rd New York Infantry

== Regimental History and Service Record ==
"Washington County Regiment"
Organized at Salem, N.Y., and mustered in September 4, 1862. Left State for Washington, D.C., September 5, 1862. Attached to 2nd Brigade, 1st Division, 12th Army Corps, Army of the Potomac, to May, 1863. 1st Brigade, 1st Division, 12th Army Corps, Army of the Potomac, to October, 1863, and Army of the Cumberland to April, 1864. 1st Brigade, 1st Division, 20th Army Corps, Army of the Cumberland, to June, 1865.
SERVICE.--Duty in the Defenses of Washington, D.C., until September 29, 1862, and at Frederick, Md., and Sandy Hook until December 13, 1862. Moved to support of Burnside at Fredericksburg, Va., December 10-14. At Stafford Court House until April 27, 1863. "Mud March" January 20-24. 
* April 27-May 6, 1863 - The Chancellorsville Campaign
** May 1-5, 1863 - Battle of Chancellorsville, Virginia
* June 11-August 1, 1863 - The Gettysburg Campaign
** July 1-3, 1863 - Battle of Gettysburg, Pennsylvania
Pursuit of Lee to Manassas Gap, Va., July 5-24. Duty on line of the Rappahannock until September. Moved to Bealeton Station, Va., thence to Stevenson, Ala., September 24-October 4. Guard duty along Nashville & Chattanooga Railroad until April, 1864. Action near Tullahoma, Tenn., March 16, 1864. 
* May 1-September 8, 1864 - The Atlanta Campaign
** May 8-11, 1864 - Demonstration against Rocky Faced Ridge, Georgia
** May 14-May 15, 1864 - Battle of Resaca, Georgia
** Near Cassville May 19. 
** Advance on Dallas May 22-25. 
** New Hope Church May 25. 
** May 25-June 5, 1864 - Operations in Bartow County, Georgia
** Operations about Marietta and against Kenesaw Mountain June 10-July 2.: 
** Pine Hill June 11-14. 
** Lost Mountain June 15-17. 
** Gilgal or Golgotha Church June 15. 
** Muddy Creek June 17. 
** Noyes' Creek June 19. 
** Kolb's Farm June 22. 
** Assault on Kenesaw Mountain June 27. 
** Ruff's Station, Smyrna Camp Ground, July 4. 
** Chattahoochie River July 5-17. 
** Peach Tree Creek July 19-20. 
** July 22-August 25, 1864 - Siege of Atlanta, Georgia
** Operations at Chattahoochie River Bridge August 26-September 2. 
** September 2-November 15 - Occupation of Atlanta, Georgia
* November 15-December 21, 1864 - The Savannah Campaign
** December 10-21, 1864 - Siege of Savannah, Georgia
* January 1-April 26, 1865 - The Carolinas Campaign
** Thompson's Creek, near Chesterfield Court House, S.C., and near Cheraw March 2. 
** Averysboro, N. C., March 16. 
** Battle of Bentonville March 19-21. 
** Occupation of Goldsboro March 24, and of Raleigh April 14. 
** Bennett's House April 26. 
*** Surrender of Johnston and his army. 
* March to Washington, D.C., via Richmond, Va., April 29-May 20. 
* Grand Review May 24. 
* Mustered out June 8, 1865. 
** Veterans and Recruits transferred to 60th New York Infantry.
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 6 Officers and 66 Enlisted men killed and mortally wounded and 95 Enlisted men by disease. Total 167.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 703, 704, 705, 707, 715, 719, 721, 723, 827, 834, 905, 916, 1453)
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