143rd New York Infantry

== Regimental History and Service Record ==
* "Sullivan County Regiment"
Organized at Monticello, N.Y., and mustered in October 8, 1862. Left State for Washington, D.C., October 14, 1862. Attached to 3rd Brigade, Abercrombie's Division, Defenses of Washington, D.C., to February, 1863. 3rd Brigade, Abercrombie's Division, 22nd Army Corps, Dept. of Washington, to April; 1863. 2nd Brigade, 3rd Division, 7th Army Corps, Dept. of Virginia, to May, 1863. 1st Brigade, 2nd Division, 4th Army Corps, to July, 1863. 1st Brigade, 3rd Division, 11th Army Corps, Army of the Potomac, to October, 1863, and Army of the Cumberland to April, 1864. 3rd Brigade, 1st Division, 20th Army Corps, Army of the Cumberland, to July, 1865.
SERVICE.---Duty in the Defenses of Washington, D. C., until April, 1863. Moved to Suffolk, Va., April 18. Siege of Suffolk April 20-May 4. Providence Church Road May 3. Siege of Suffolk raised May 4. Dix's Campaign on the Peninsula June 24-July 7. Moved to Washington, D.C., July 10. Pursuit of Lee to Berlin, Md., July 13-22. Near Bristoe Station, Va., until September. Movement to Bridgeport, Ala., September 24-October 3. 
* October 20, 1863 - Reconnaissance from Bridgeport, Alabama to Trenton, Alabama (detachment)
* March along line of Nashville & Chattanooga Railroad to Lookout Valley, Tenn., October 25-29.
* Reopening Tennessee River October 26-29.
* Battle of Wauhatchie, Tenn., October 28-29. 
* November 23-27, 1863 - The Chattanooga/Ringgold Campaign
** Orchard Knob November 23.
** Tunnel Hill November 24-25.
** Mission Ridge November 25. 
* March to relief of Knoxville November 28-December 17.
* Duty in Lookout Valley until May, 1864. 
* May 1-September 8, 1864 - The Atlanta Campaign
** Demonstration on Rocky Faced Ridge May 8-11. 
** 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
*** June 4, 1864 - Engagement at Ackworth, 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 June 27. 
** Ruff's Station or 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
** October 26-29, 1864 - Expedition from Atlanta, Georgia to Tuckum's Crossroads, Georgia 
* November 15-December 21, 1864 - The Savannah Campaign
** Monteith Swamp December 9. 
** December 10-21, 1864 - Siege of Savannah, Georgia
* January 1-April 26, 1865 - The Carolinas Campaign
** Averysboro, N. C., March 16. 
** Battle of Bentonville March 19-21. 
** Occupation of Goldsboro March 24. 
** Advance on Raleigh April 7-13. 
** Occupation 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. 
* Duty at Washington, D.C., until July. 
* Mustered out July 20, 1865.
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 5 Officers and 37 Enlisted men killed and mortally wounded and 1 Officer and 177 Enlisted men by disease. Total 220.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 664, 703, 705, 707, 708, 715, 719, 720, 721, 723, 834, 866, 1459)
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