121st New York Infantry

   

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in New York Infantry

Editor’s Note: Do you have information on this unit’s role at the Siege of Petersburg?  Please contact us using the Contact button in the menu at the top of the screen.  We are happy to exchange information with other researchers.

Muster In: Organized at Herkimer and mustered in August 13, 1862.1
Muster Out: Mustered out June 25, 1865.2

Commander(s):
Brevet Colonel Egbert Olcott
Commander Image

Major Henry M. Galpin
Commander Image

Captain James W. Cronkite
Commander Image

Commander 4
Commander Image

First Offensive Order of Battle: Second Brigade | First Division | VI Corps | Army of the Potomac | Union Army3,4

Second Offensive Order of Battle: Second Brigade | First Division | VI Corps | Army of the Potomac | Union Army7,8

Third Offensive Order of Battle: Second Brigade | First Division | VI Corps | Army of the Potomac | Union Army12

  • Commander: Major Henry M. Galpin (July 31, 1864)13
  • Unit Strength:
  • Weapons:
  • Note: The Second Brigade, First Division, Sixth Corps moved to City Point, Va. on July 9 and embarked for Washington, D.C. on July 10, 1864.14,15

Fourth Offensive Order of Battle:

  • Not present at the Siege of Petersburg.16

Fifth Offensive Order of Battle:

  • Not present at the Siege of Petersburg.17

Sixth Offensive Order of Battle:

  • Not present at the Siege of Petersburg.18

Seventh Offensive Order of Battle: Second Brigade | First Division | VI Corps | Army of the Potomac | Union Army19

  • Commander: Captain James W. Cronkite (December 31, 1864)20
  • Unit Strength:
  • Weapons:
  • Note: This unit moved to the Siege of Petersburg from December 9-12, 1864.21

Eighth Offensive Order of Battle: Second Brigade | First Division | VI Corps | Army of the Potomac | Union Army22,23,24

  • Commander: Lieutenant Colonel Egbert Olcott (January 31 & February 28, 1865)25
  • Unit Strength:
  • Weapons:
  • Note: This unit is listed in the casualty returns for the Battle of Hatcher’s Run, February 5-7, 1865, implying it was present during the Eighth Offensive and the battle.26

Ninth Offensive Order of Battle: Second Brigade | First Division | VI Corps | Army of the Potomac | Union Army27,28

  • Commander: Brevet Colonel Egbert Olcott (March 31, 1865)29
  • Unit Strength:
  • Weapons:

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles30:

  • Before Petersburg June 17-18.
  • Siege of Petersburg to July 9.
  • Jerusalem Plank Road June 22-23.
  • Moved to Washington, D.C., July 9-11.
  • …away…
  • Moved to Petersburg, Va., December 9-12.
  • Siege of Petersburg December 12, 1864, to April 2, 1865.
  • Dabney’s Mills, Hatcher’s Run, February 5-7, 1865.
  • Appomattox Campaign March 28-April 9.
  • Assault on and fall of Petersburg April 2.
  • Sailor’s Creek April 6.
  • Appomattox Court House April 9.
  • Surrender of Lee and his army.

Bibliography:

Siege of Petersburg Documents Which Mention This Unit:

Sources:

  1. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  2. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  3. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 1 (Serial Number 80), p. 226
  4. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 2 (Serial Number 81), p. 547
  5. Volume 14 (Ordnance Returns for the Second Quarter, April-June, 1864); 121st New York Entry, Page 1; Summary Statements of Quarterly Returns of Ordnance and Ordnance Stores on Hand in Regular and Volunteer Army Organizations, 1862-1867, 1870-1876. (National Archives Microfilm Publication M1281, Roll 7); Records of the Office of the Chief of Ordnance, 1797-1969, Record Group 156; National Archives Building, Washington, D.C.
  6. Volume 14 (Ordnance Returns for the Second Quarter, April-June, 1864); 121st New York Entry, Page 1; Summary Statements of Quarterly Returns of Ordnance and Ordnance Stores on Hand in Regular and Volunteer Army Organizations, 1862-1867, 1870-1876. (National Archives Microfilm Publication M1281, Roll 7); Records of the Office of the Chief of Ordnance, 1797-1969, Record Group 156; National Archives Building, Washington, D.C.
  7. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 1 (Serial Number 80), p. 226
  8. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 2 (Serial Number 81), p. 547
  9. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 2 (Serial Number 81), p. 547
  10. Volume 14 (Ordnance Returns for the Second Quarter, April-June, 1864); 121st New York Entry, Page 1; Summary Statements of Quarterly Returns of Ordnance and Ordnance Stores on Hand in Regular and Volunteer Army Organizations, 1862-1867, 1870-1876. (National Archives Microfilm Publication M1281, Roll 7); Records of the Office of the Chief of Ordnance, 1797-1969, Record Group 156; National Archives Building, Washington, D.C.
  11. Volume 14 (Ordnance Returns for the Second Quarter, April-June, 1864); 121st New York Entry, Page 1; Summary Statements of Quarterly Returns of Ordnance and Ordnance Stores on Hand in Regular and Volunteer Army Organizations, 1862-1867, 1870-1876. (National Archives Microfilm Publication M1281, Roll 7); Records of the Office of the Chief of Ordnance, 1797-1969, Record Group 156; National Archives Building, Washington, D.C.
  12. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 1 (Serial Number 80), page 257
  13. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XXVII, Part 2 (Serial Number 71), page 550
  14. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XXVII, Part 1 (Serial Number 70), page 271
  15. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  16. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  17. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  18. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  19. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 3 (Serial Number 89), page 1119: “Organization of the Union Forces” (December 31, 1864)
  20. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 3 (Serial Number 89), page 1119: “Organization of the Union Forces” (December 31, 1864)
  21. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  22. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLVI, Part 2 (Serial Number 96), page 329: “Organization of the Union Forces” (January 31, 1865)
  23. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLVI, Part 2 (Serial Number 96), page 743: “Organization of the Union Forces” (February 28, 1865)
  24. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLVI, Part 1 (Serial Number 96), page 67: “Return of Casualties in the Union forces at Hatcher’s Run (otherwise known as Dabney’s Mill, Armstrong’s Mill, Rowanty Creek, and Vaughan Road)… (February 5-7, 1865)”
  25. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLVI, Part 2 (Serial Number 96), page 329: “Organization of the Union Forces” (January 31, 1865)
  26. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLVI, Part 1 (Serial Number 96), page 67: “Return of Casualties in the Union forces at Hatcher’s Run (otherwise known as Dabney’s Mill, Armstrong’s Mill, Rowanty Creek, and Vaughan Road)… (February 5-7, 1865)”
  27. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLVI, Part 1 (Serial Number 95), page 571: “Organization of the Union Forces” (March 31, 1865)
  28. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLVI, Part 1 (Serial Number 95), page 587: “Return of casualties in the Union Forces commanded by Lieut. Gen. Ulysses S. Grant, March 29-April 9, 1865”
  29. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLVI, Part 1 (Serial Number 95), page 571: “Organization of the Union Forces” (March 31, 1865)
  30. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)

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