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45th Pennsylvania Infantry

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Muster In: Organized at Camp Curtin, Harrisburg, October 21, 1861.1
Muster Out: Mustered out July 17, 1865.2

Commander(s):
Brevet Colonel Theodore Gregg
Commander Image

Captain Roland C. Cheeseman
Commander Image

Lieutenant Lafayette W. Lord
Commander Image

Commander 4
Commander Image

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

Second Offensive Order of Battle: First Brigade | Second Division | IX Corps | Army of the Potomac | Union Army6,7

Third Offensive Order of Battle: First Brigade | Second Division | IX Corps | Army of the Potomac | Union Army11,12

  • Commander: Captain Theodore Gregg (July 31, 1864)13
  • Unit Strength:
  • Weapons:

Fourth Offensive Order of Battle: First Brigade | Second Division | IX Corps | Army of the Potomac | Union Army14,15

  • Commander: Captain Theodore Gregg (August 31, 1864)16
  • Unit Strength:
  • Weapons:

Fifth Offensive Order of Battle: First Brigade | Second Division | IX Corps | Army of the Potomac | Union Army17,18

  • Commander:
  • Unit Strength:
  • Weapons:

Sixth Offensive Order of Battle: First Brigade | Second Division | IX Corps | Army of the Potomac | Union Army19,20

  • Commander: Lieutenant Lafayette W. Lord (October 31, 1864)21
  • Unit Strength:
  • Weapons:

Seventh Offensive Order of Battle: First Brigade | Second Division | IX Corps | Army of the Potomac | Union Army22

  • Commander: Captain Roland C. Cheeseman (December 31, 1864)23
  • Unit Strength:
  • Weapons:

Eighth Offensive Order of Battle: First Brigade | Second Division | IX Corps | Army of the Potomac | Union Army24,25

  • Commander: Captain Roland C. Cheeseman (January 31 & February 28, 1865)26,27
  • Unit Strength:
  • Weapons:

Ninth Offensive Order of Battle: First Brigade | Second Division | IX Corps | Army of the Potomac | Union Army28,29

  • Commander:
    • Captain Roland C. Cheeseman (wounded April 2)(March 31-April 2, 1865)30
    • Brevet Colonel Theodore Gregg (March 31, 1865)31
  • Unit Strength:
  • Weapons:

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles32:

  • Before Petersburg June 16-18.33
  • Siege of Petersburg June 16, 1864, to April 2, 1865.
  • Mine Explosion, Petersburg, July 30, 1864.
  • Weldon Railroad August 18-21.
  • Poplar Springs Church September 29-October 2.
  • Peeble’s Farm October 1.
  • Boydton Plank Road, Hatcher’s Run, October 27-28.
  • At Fort Rice until April, 1865.
  • Fort Stedman March 25, 1865.
  • Assault on and fall of Petersburg April 2.
  • March to Farmville April 3-9.

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. 229 ↩
    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. 549 ↩
    5. Volume 14 (Ordnance Returns for the Second Quarter, April-June, 1864); 45th Pennsylvania Entry, Page 46; 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. 229 ↩
    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. 549 ↩
    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. 549 ↩
    9. “From the 45th Pennsylvania Regiment.” Tioga County Agitator (Wellsboro, PA), June 29, 1864, p. 2, col. 4-5: “Our regiment has now but 260 men fit for duty.” ↩
    10. Volume 14 (Ordnance Returns for the Second Quarter, April-June, 1864); 45th Pennsylvania Entry, Page 46; 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. 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 259 ↩
    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 734 ↩
    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 734 ↩
    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 617: “Organization of the Army of the Potomac…August 31, 1864” ↩
    15. 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 126: “Return of Casualties in the Union Forces (August 1864)” ↩
    16. 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 617: “Organization of the Army of the Potomac…August 31, 1864” ↩
    17. 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. 1301. ↩
    18. 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 142: “Return of Casualties in the Union Forces (September-October 1864)” ↩
    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 463: “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 1 (Serial Number 87), page 158: “Return of Casualties in the Union Forces…Boydton Plank Road, Va., October 27-28, 1864” ↩
    21. 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 463: “Organization of the Union Forces” (October 31, 1864)” ↩
    22. 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 1121: “Organization of the Union Forces” (December 31, 1864) ↩
    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 1121: “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 XLVI, Part 2 (Serial Number 96), page 332: “Organization of the Union Forces” (January 31, 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 745: “Organization of the Union Forces” (February 28, 1865) ↩
    26. 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 332: “Organization of the Union Forces” (January 31, 1865) ↩
    27. 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 745: “Organization of the Union Forces” (February 28, 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 573: “Organization of the Union Forces” (March 31, 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 589: “Return of casualties in the Union Forces commanded by Lieut. Gen. Ulysses S. Grant, March 29-April 9, 1865” ↩
    30. 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 573: “Organization of the Union Forces” (March 31, 1865) ↩
    31. 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 573: “Organization of the Union Forces” (March 31, 1865) ↩
    32. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3) ↩
    33. “From the 45th Pennsylvania Regiment.” Tioga County Agitator (Wellsboro, PA), June 29, 1864, p. 2, col. 4-5 ↩

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