This roster includes the known officers and enlisted men of the 100th Pennsylvania Infantry (Three Years’ Service), organized by Field & Staff and companies when available. Information is drawn from 19th-century state adjutant general reports, the Official Records, and verified regimental histories.
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For an overview of this regiment’s organization, service, engagements, and casualties, see the regiment summary page.
Research This Regiment
If you’re researching ancestors in the 100th Pennsylvania Infantry (Three Years’ Service), these resources may provide additional historical detail, including regimental histories and Civil War reference works.
Field & Staff
- Colonel: Daniel Leasure
- Colonel: N. J. Maxwell
- Lieutenant Colonel: James Armstrong
- Lieutenant Colonel: David A. Leckey
- Lieutenant Colonel: Matthew M. Dawson
- Lieutenant Colonel: Joseph H. Pentecost
- Lieutenant Colonel: Charles Wilson
- Major: David A. Leckey
- Major: Matthew M. Dawson
- Major: James Armstrong
- Major: James H. Cline
- Major: T. J. Hamilton
- Major: David Critchlow
- Major: James W. Bard
Detailed company-level roster entries are not included in the currently supplied source text.
Sources & Notes
- Official Records of the War of the Rebellion
- Pennsylvania State Adjutant General reports
- Dyer’s Compendium
- “The Union Army,” Federal Publishing Company, 1908