3rd Pennsylvania Heavy Artillery, Company A

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Muster In: Segebarth’s Battalion Marine Artillery, assigned as Companies “A,” “B,” “G,” “H,” “K” and “L.”¹
Muster Out: Companies “A” and “B” mustered out July 11, 1865.²

Commander(s):
Major Franz von Schilling
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Lieutenant William G. Rohrman
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Lieutenant Thomas F. Harris
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Commander 3
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First Offensive Order of Battle: Naval Brigade | Army of the James | Union Army³

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• Weapons: Springfield Rifles (.58 caliber) (June 30, 1864)⁴

Second Offensive Order of Battle: Naval Brigade | Army of the James | Union Army⁵

• Commander: Lieutenant William G. Rohrman (June 30, 1864)⁶
• Unit Strength:
• Weapons: Springfield Rifles (.58 caliber) (June 30, 1864)⁷

Third Offensive Order of Battle: Naval Brigade | Army of the James | Union Army⁸,⁹

• Commander: Lieutenant Thomas F. Harris (July 31, 1864)¹⁰
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Fourth Offensive Order of Battle: ?

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Fifth Offensive Order of Battle: Naval Brigade | Army of the James | Union Army¹¹

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Sixth Offensive Order of Battle: Naval Brigade | Army of the James | Union Army¹²

• Commander: Major Franz von Schilling (commanded all four 3^rd PA HA Naval Brigade companies)(October 31, 1864)¹³
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Seventh Offensive Order of Battle:

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Eighth Offensive Order of Battle:

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Ninth Offensive Order of Battle:

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Dyer’s/Sifakis’ Compendium Info:
Siege of Petersburg Battles¹⁴:

• Duty in the Dept. of Virginia entire term, with Headquarters at Fortress Monroe, Va.
• Detachments of all Companies but “H” served at times in Graham’s Naval Brigade and participated in several engagements on the James, Chickahominy and Nansemond Rivers.

Bibliography:

Siege of Petersburg Documents Which Mention This Unit:

Sources: