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Muster In: Organized at Westfield and Albany, N.Y., September 9 to November 19, 1861.1
Muster Out: Mustered out July 17, 1865.2

Commander(s):
Lieutenant Colonel George S. Nichols
Commander Image

Major James R. Dinnin
Commander Image

Commander 3
Commander Image

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

  • Commander:
  • Unit Strength:
  • Weapons:

Second Offensive Order of Battle: Second Brigade | First Division | Cavalry Corps | Army of the Potomac | Union Army5,6

  • Commander: Lieutenant Colonel George S. Nichols (June 30, 1864)7
  • Unit Strength:
  • Weapons:

Third Offensive Order of Battle: Second Brigade | First Division | Cavalry Corps | Army of the Potomac | Union Army8,9

  • Commander: Lieutenant Colonel George S. Nichols (July 31, 1864)10
  • Unit Strength:
  • Weapons:

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

  • Commander:
  • Unit Strength:
  • Weapons:
  • Note: The Second Brigade, First Division, Cavalry Corps, Army of the Potomac was ordered to Washington, D. C. and embarked in early August 1864.  More research is needed on the exact date(s).11

Fifth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.12

Sixth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.13

Seventh Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.14

Eighth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.15

Ninth Offensive Order of Battle: Second Brigade | First Division | Cavalry | Army of the Shenandoah | Union Army16,17

  • Commander: Major James R. Dinnin (March 31, 1865)18
  • Unit Strength:
  • Weapons:
  • Note: Sheridan’s cavalry from the Army of the Shenandoah, formerly the 1st and 3rd Divisions, Cavalry Corps, AotP, crossed the James River from the north side on March 26, 1865 to rejoin the Union Armies operating against Richmond and Petersburg.

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles19:

  • Sheridan’s Trevillian Raid June 7-24.
  • Trevillian Station June 11-12.
  • Newark or Mallory’s Cross Roads June 12.
  • Black Creek or Tunstall Station and White House or St. Peter’s Church June 21.
  • Jones Bridge June 23.
  • Before Petersburg June 29-July 31.
  • Demonstration north of the James July 27-29.
  • Deep Bottom July 28-29.
  • …away…
  • Appomattox Campaign March 28-April 9.
  • Dinwiddie Court House March 30-31.
  • Five Forks April 1.
  • Scott’s Cross Roads April 2.
  • Fall of Petersburg April 2.
  • Tabernacle Church or Beaver Pond 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. 231
    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. 550
    5. 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. 231
    6. 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. 550
    7. 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. 550
    8. 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 261
    9. 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 735
    10. 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 735
    11. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    12. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    13. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    14. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    15. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    16. 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 575: “Organization of the Union Forces” (March 31, 1865)
    17. 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 591: “Return of casualties in the Union Forces commanded by Lieut. Gen. Ulysses S. Grant, March 29-April 9, 1865”
    18. 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 575: “Organization of the Union Forces” (March 31, 1865)
    19. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)

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