This roster includes the known officers and enlisted men of the 18th Pennsylvania Infantry (Three Months’ Service), organized by Field & Staff and Companies A through K. 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 18th Pennsylvania Infantry (Three Months’ Service), these resources may provide additional historical detail, including regimental histories and Civil War reference works.
Field & Staff
- Colonel William D. Lewis, Jr. – Commanded the regiment during its three months’ service.
- Lieutenant Colonel Charles Wilhelm – Second in command.
- Major Alexander E. Newbold – Field officer.
Company A
Records for this company are incomplete in the surviving state adjutant general reports.
Company B
Records for this company are incomplete in the surviving state adjutant general reports.
Company C
Records for this company are incomplete in the surviving state adjutant general reports.
Company D
Records for this company are incomplete in the surviving state adjutant general reports.
Company E
Records for this company are incomplete in the surviving state adjutant general reports.
Company F
Records for this company are incomplete in the surviving state adjutant general reports.
Company G
Records for this company are incomplete in the surviving state adjutant general reports.
Company H
Records for this company are incomplete in the surviving state adjutant general reports.
Company I
Records for this company are incomplete in the surviving state adjutant general reports.
Company K
Records for this company are incomplete in the surviving state adjutant general reports.
Sources & Notes
- Official Records of the War of the Rebellion, Series I, relevant volumes and pages.
- State Adjutant General Report for Pennsylvania (year and volume as available).
- Dyer’s Compendium.
- Fox, “Regimental Losses in the American Civil War.”
- The Union Army, Federal Publishing Company, 1908, Volume 1.