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Muster In: Organized at Baltimore, Md., July 15 to September 1, 1863.1
Muster Out: Mustered out May 4, 1866.2

Commander(s):
Lieutenant Colonel George Rogers
Commander Image

Major Augustus S. Boernstein
Commander Image

Commander 3
Commander Image

First Offensive Order of Battle: Second Brigade | Third Division | XVIII Corps | Army of the James | Union Army3,4

Second Offensive Order of Battle: Second Brigade | Third Division | XVIII Corps | Army of the James | Union Army6,7

Third Offensive Order of Battle: Second Brigade | Third Division | XVIII Corps | Army of the James | Union10,11

  • Commander: Lieutenant Colonel George Rogers (July 31, 1864)12
  • Unit Strength:
  • Weapons:

Fourth Offensive Order of Battle: Third Brigade | Third Division | XVIII Corps | Army of the James | Union Army13

  • Commander: Major Augustus S. Boernstein (August 31, 1864)14
  • Unit Strength:
  • Weapons:

Fifth Offensive Order of Battle: Third Brigade | Third Division | XVIII Corps | Army of the James | Union Army15,16

  • Commander: Major Augustus S. Boernstein (September 29, 1864)17
  • Unit Strength: 361 officers and men PFD (September 29, 1864)18
  • Weapons:

Sixth Offensive Order of Battle: Third Brigade | Third Division | XVIII Corps | Army of the James | Union Army19

  • Commander: Major Augustus S. Boernstein (October 31, 1864)20
  • Unit Strength:
  • Weapons:
  • Note: 3/3/XVIII/AotJ did not participate in the Battle of Fair Oaks and Darbytown Road on October 27-28, 1864.21

Seventh Offensive Order of Battle:

Third Brigade | Third Division | XVIII Corps | Army of the James | Union Army (November 1-December 3, 1864)22

Second Brigade | First Division | XXV Corps | Army of the James | Union Army (December 3-31, 1864)23

  • Commander: Lieutenant Colonel George Rogers (December 31, 1864)24
  • Unit Strength:
  • Weapons:
  • Note: On December 3, 1864, the X Corps and XVIII Corps of the Army of the James were reorganized into the XXIV Corps and the XXV Corps.
  • Note: Left the Siege of Petersburg on December 7, 1864 to participate in the First Assault on Fort Fisher, NC.25

Eighth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.26

Ninth Offensive Order of Battle:

  • No longer present at the Siege of Petersburg.27

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles28:

  • Duty at Spring Hill on the Appomattox until June.
  • (Built Fort Converse on the Bermuda Hundred line.)
  • Before Petersburg June 15-18.
  • Siege operations against Petersburg and Richmond June 16 to December 7.
  • Mine Explosion, Petersburg, July 30.
  • Dutch Gap September 7.
  • Battle of Chaffin’s Farm, New Market Heights, September 28-30.
  • Battle of Fair Oaks October 27-28.

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. 237
  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. 555
  5. Volume 14 (Ordnance Returns for the Second Quarter, April-June, 1864); 4th United States Colored Troops Entry, Page 89; 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. 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. 237
  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. 555
  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. 555
  9. Volume 14 (Ordnance Returns for the Second Quarter, April-June, 1864); 4th United States Colored Troops Entry, Page 89; 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.
  10. 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 266
  11. 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 740
  12. 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 740
  13. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 2 (Serial Number 88), page 622: “Organization of the Army of the Potomac…August 31, 1864”
  14. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 2 (Serial Number 88), page 622: “Organization of the Army of the Potomac…August 31, 1864”
  15. Sommers, Richard J. “Grant’s Fifth Offensive at Petersburg: A Study in Strategy, Tactics, and Generalship.  The Battle of Poplar Spring Church, the First Battle of the Darbytown Road, the Second Battle of the Squirrel Level Road, the Second Battle of the Darbytown Road (Ulysses S. Grant, Virginia).” Doctoral Thesis. Rice University, 1970. Print. p. 1304.
  16. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 1 (Serial Number 87), page 136: “Return of Casualties in the Union Forces (September-October 1864)”
  17. Field, Ron. Combat 2: Union Infantrymen Versus Confederate Infantrymen: Eastern Theater 1861-65 (Osprey: 2013), p. 59
  18. Field, Ron. Combat 2: Union Infantrymen Versus Confederate Infantrymen: Eastern Theater 1861-65 (Osprey: 2013), p. 59: “11 officers and 350 enlisted men”
  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 467: “Organization of the Union Forces” (October 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 467: “Organization of the Union Forces” (October 31, 1864)”
  21. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Volume XLII, Part 1 (Serial Number 87), page 151: “Return of Casualties in the Union Forces…Fair Oaks and Darbytown Road, Va., October 27-28, 1864”
  22. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  23. 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 1126: “Organization of the Union Forces” (December 31, 1864)
  24. 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 1126: “Organization of the Union Forces” (December 31, 1864)
  25. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  26. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  27. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
  28. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)

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