This roster includes the known officers and enlisted men of the 66th Pennsylvania Infantry, 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 66th Pennsylvania Infantry, these resources may provide additional historical detail, including regimental histories and Civil War reference works.
Field & Staff
- Colonel: John Patrick
- Lieutenant Colonel: James B. Freeman
- Major: Algernon S. Patrick
- Colonel (initial recruiter, not mustered as Colonel): Alfred W. Chantry
Detailed company-level roster entries are not included in the currently supplied source text. The regiment was never fully organized, and many men were transferred to other Pennsylvania regiments upon its disbandment in March 1862. Companies B, D, and C were transferred to the 73rd Pennsylvania Infantry; Companies A and G to the 99th Pennsylvania Infantry; Companies E, F, and K were disbanded and their men distributed among the companies of the 73rd Pennsylvania Infantry.
Sources & Notes
- The Union Army, Federal Publishing Company, 1908, Vol. 1
- Official Records of the War of the Rebellion
- Pennsylvania State Adjutant General reports