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Muster In: Organized at Indianapolis, Ind., and mustered in September 13, 1861.1
Muster Out: Non-Veterans mustered out September 20, 1864. Veterans and Recruits transferred to 19th Indiana Infantry September 23, 1864.2

Commander(s):
Major Merit C. Welsh
Commander Image

Commander 2
Commander Image

Commander 3
Commander Image

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

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

Third Offensive Order of Battle: First Brigade | Fourth Division | V Corps | Army of the Potomac | Union Army10,11

  • Commander: Major Merit C. Welsh (July 31, 1864)12
  • Unit Strength:
  • Weapons:

Fourth Offensive Order of Battle:

First Brigade | Fourth Division | V Corps | Army of the Potomac | Union Army (August 1-?, 1864)13

Third Brigade | Third Division | V Corps | Army of the Potomac | Union Army (August ?-31, 1864)14

  • Commander: Major Merit C. Welsh (August 31, 1864)15
  • Unit Strength:
  • Weapons:

Fifth Offensive Order of Battle: First Brigade | Third Division | V Corps | Army of the Potomac | Union Army (September 1-23, 1864) (need source)

  • Commander:
  • Unit Strength:
  • Weapons:
  • Note: Non-Veterans mustered out September 20, 1864. Veterans and Recruits transferred to 19th Indiana Infantry September 23, 1864.16

Sixth Offensive Order of Battle:

  • No longer an independent command.17

Seventh Offensive Order of Battle:

  • No longer an independent command.18

Eighth Offensive Order of Battle:

  • No longer an independent command.19

Ninth Offensive Order of Battle:

  • No longer an independent command.20

Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles21:

  • Before Petersburg June 16-18.
  • Siege of Petersburg June 16-September 20.
  • Weldon R. R. August 18-21.
  • Non-Veterans mustered out September 20, 1864.
  • Veterans and Recruits transferred to 19th Indiana Infantry September 23, 1864.

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. 225
    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. 546
    5. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 7th Indiana Entry, Page 41; 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. 225
    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. 546
    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. 546
    9. Volume 13 (Ordnance Returns for the Second Quarter, April-June, 1864); 7th Indiana Entry, Page 41; 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 256
    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 733
    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 733
    13. 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 125: “Return of Casualties in the Union Forces (August 1864)”: At some point after the Battle of Globe Tavern ended on August 21, 1864 the Fourth Division, Fifth Corps, Army of the Potomac ceased to exist and its units were parceled out to the rest of the Fifth Corps.  The Official Records, XLII, Part 2, page 800 contains General Orders #35 from September 12, 1864 detailing the changes.  However, the table in OR, Vol. XLII, Part 2, page 614 showing the organization of the Army of the Potomac on August 31, 1864 already has the Fourth Division, Fifth Corps broken up.  More research is needed.
    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 616: “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 2 (Serial Number 88), page 616: “Organization of the Army of the Potomac…August 31, 1864”
    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. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    20. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)
    21. A Compendium of the War of the Rebellion by Frederick H. Dyer (Part 3)

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