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Muster In: Regiment recruited at New York City as Ira Harris Cavalry. Designated Ira Harris Guard October 16,1861, and 5th New York Cavalry November 14, 1861. Companies mustered in as follows: “A” August 15, “B” August 21, “C” September 3, “D” October 1, “E” October 7, “F” September 21, “G” October 9, “H” October 28, “I,” “K,” “L” and “M” October 31, 1861.1
Muster Out: Mustered out July 19, 1865.2

Commander(s):
Colonel John Hammond
Commander Image

Colonel Amos H. White (in the Valley only)
Commander Image

Lieutenant Colonel William P. Bacon
Commander Image

Major Abram H. Krom (in the Valley only)
Commander Image

Major Theodore Boice (in the Valley only)
Commander Image

Captain Elmer Barker (in the Valley only)
Commander Image

Commander 7
Commander Image

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

  • Commander: Lieutenant Colonel John Hammond (at least June 17, 1864)5
  • Unit Strength:
  • Weapons: Spencer Repeating Carbine (May 5, 1864)6

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

  • Commander: Lieutenant Colonel John Hammond (June 21-30, 1864)9,10
  • Unit Strength:
  • Weapons: Spencer Repeating Carbine (June 29, 1864)11

Third Offensive Order of Battle: First Brigade | Third Division | Cavalry Corps | Army of the Potomac | Union Army12,13

  • Commander:
    • Lieutenant Colonel (Colonel) John Hammond (at least July 1-3 and 17-18, 1864)(promoted to Colonel on July 3, 1864)14,15
    • Lieutenant Colonel William P. Bacon (July 31, 1864)16
  • Unit Strength:
  • Weapons:

Fourth Offensive Order of Battle: First Brigade | Third Division | Cavalry Corps | Army of the Potomac | Union Army

  • Commander:
    • Colonel John Hammond (at least August 12 and 30, 1864)(Resigned August 30, 1864)17
    • Lieutenant Colonel William P. Bacon (August 30, 1864)18
  • Unit Strength:
  • Weapons:
  • Note: The Third Cavalry Division, Cavalry Corps, Army of the Potomac was ordered to Washington, D. C. on August 4-5, 1864 and embarked on or near August 6-7, 1864.19,20

Fifth Offensive Order of Battle:

  • Commander:
    • Lieutenant Colonel William P. Bacon (September 1-12, 1864)(resigned September 12, 1864)21
    • Major Abram H. Krom (September 12-October 15, 1864)22
  • No longer present at the Siege of Petersburg.23

Sixth Offensive Order of Battle:

  • Commander:
    • Major Abram H. Krom (October 16-19, 1864)(mustered out October 19, 1864)24
    • Captain Elmer Barker (October 19-21, 1864)25
    • Major Theodore Boice (October 21, 1864)26
  • No longer present at the Siege of Petersburg.27

Seventh Offensive Order of Battle:

  • Commander:
    • Major Theodore Boice (up to December 19, 1864)28
    • Colonel Amos H. White (December 19, 1864)29
  • No longer present at the Siege of Petersburg.30

Eighth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.31

Ninth Offensive Order of Battle: First Brigade | Third Division | Cavalry | Army of the Shenandoah | Union Army (portion of regiment only)32

  • Commander: Lieutenant Colonel Theodore Boice (March 7, 1865)(but Boice and most of the regiment never went back to Petersburg)33
  • Unit Strength:
  • Weapons:
  • Note: A small portion of the regiment returned to the Siege of Petersburg between March 7 and March 28, 1865.34

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles35:

  • Riddell’s Shop and Long Bridge June 12.
  • White Oak Swamp June 13.
  • Malvern Hill June 14.
  • Smith’s Store near St. Mary’s Church June 15.
  • White House Landing June 19.
  • Wilson’s Raid on South Side & Danville Railroad, June 22-30.
  • Black and white and Nottaway Court House June 23.
  • Staunton Bridge June 24.
  • Roanoke Bridge June 25.
  • Sappony Church or Stony Creek June 28.
  • Ream’s Station June 29.
  • Before Petersburg until July 30.
  • …away…
  • (A portion of Regiment at Dinwiddie Court House March 30-31. Five Forks April 1. Fall of Petersburg April 2. Sweet House Creek April 3. Harper’s Farm April 6. Appomattox Station April 8. 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. 232
  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. 551
  5. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 193
  6. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 179
  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. 232
  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. 551
  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. 551
  10. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 208
  11. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 204
  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 262
  13. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 3 (Serial Number 82), page 736
  14. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 208
  15. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), pp. 209, 216-217
  16. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XL, Part 3 (Serial Number 82), page 736
  17. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), pp. 221, 226
  18. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 226
  19. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 2 (Serial Number 88), pages 61, 76 “Organization of the Army of the Potomac…August 31, 1864”
  20. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  21. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 228
  22. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 228
  23. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  24. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 228
  25. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 249
  26. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), pp. 228, 249
  27. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  28. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 254
  29. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 254
  30. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  31. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  32. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  33. Burns, Vincent L. The Fifth New York Cavalry in the Civil War (McFarland and Company, Inc.: 2013), p. 254
  34. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  35. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)

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