21st Pennsylvania Cavalry
Company M

into Service |
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| J. J. Dennison | Captain | August 4, 1863 | Absent, without leave, at muster out |
| George F. Cooke | 1st Lt. | July 29, 1863 | Transferred to Company H, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Warren M. Foster | 2d Lt. | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| Albert R. Griffith | 1st Sergeant | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Calvin B. Starrett | Quarter Master Sergeant | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Robert A. Falconer | Commissary Sergeant | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Henry S. Thomas | Sergeant | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| John A. Akin | Sergeant | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| William M’Gibson | Sergeant | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| William T. Allison | Sergeant | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Charles E. Pettis | Sergeant | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Romyan Horner | Corporal | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Mason S. Cogswell | Corporal | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Augustus N. Jones | Corporal | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Reuben Barrett | Corporal | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Henry Gates | Corporal | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Luman White | Corporal | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Levi Hare | Corporal | July 3, 1863 | Promoted to Corporal, November 22, 1863; mustered out with Company, February20, 1864 |
| Oscar F. Bowers | Corporal | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| George F. Lidy | Bugler | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| Matthias Amann | Blacksmith | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| James Dunn | Farrier | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| Askwith, James D. | Private | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| Andrews, Albert T. | Private | July 24, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Brown, Smith N. | Private | July 3, 1863 | Mustered outwith Company, February 20, 1864 |
| Bump, James | Private | July 23, 1863 | Mustered out with Company, February 20, 1864 |
| Babbitt, David O. | Private | July 30, 1863 | Mustered out with Company, February 20, 1864 |
| Burkhart, William | Private | July 24, 1863 | Mustered out with Company, February 20, 1864 |
| Barron, Herman | Private | July 24, 1863 | Mustered out with Company, February 20, 1864 |
| Beckner, John F. | Private | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| Bills, John | Private | July 3, 1863 | Absent, sick, at muster out |
| Barnhart, David | Private | August 4, 1863 | Died at Chambersburg, Pa., January 26, 1864 |
| Baker, William C. | Private | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Billings, Wm. A. | Private | July 3, 1863 | Transferred to Company H, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Bean, Dana L. | Private | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Baker, Marion H. | Private | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Blanchard, Thos. A. | Private | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Bender, Wm. H | Private | July 24, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Caughlin, Joseph | Private | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Caughlin, John | Private | July 23, 1863 | Mustered out with Company, February 20, 1864 |
| Chapel, Henry L. | Private | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Coleburn, Chas. B. | Private | July 23, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Eicles, Samuel | Private | July 23, 1863 | Mustered out with Company, February 20, 1864 |
| Embley, George | Private | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| Ellmore, William | Private | August 4, 1863 | Transferred to Company I, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Fertig, Peter | Private | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Glace, Jacob A. | Private | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| Holly, John | Private | July 27, 1863 | Mustered out with Company, February 20, 1864 |
| Harris, Winfield | Private | July 29, 1863 | Mustered out with Company, February 20, 1864 |
| Hinton, James W. | Private | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V.,’January 26, 1864 |
| Hahn, Conrad | Private | August 4, 1863 | Transferred to Company D, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Hanley, James | Private | August 4, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Knight, John D. | Private | July 3, 1863 | Transferred to Company I, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Kelley, Franklin J. | Private | July 3, 1863 | Deserted August 13, 1863 |
| Landon, Fidello | Private | July 3, 1863 | Transferred to Company I 18’2d, 3 years’ Regiment P. V., February 20, 1864 |
| Lockwood, Andrew | Private | July 2, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Miller, James A. | Private | July 24, 1863 | Mustered out with Company, February 20, 1864 |
| Martin, Wesley | Private | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| M’Ginley, David. | Private | August 4, 1863 | Mustered out with Company, February 20, 1864 |
| M’Clintock, Jeff | Private | July 24, 1863 | Accidentally killed at Scranton, Pa., December 25, 1863 |
| M’Clintock, Mart. V. | Private | July 24, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Phillips, Asa L. | Private | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Pentz, Joseph | Private | July 30, 1863 | Mustered out with Company, February 20, 1864 |
| Pearson. Henry C. | Private | July 24, 1863 | Transferred to Co H, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Pratt, De Forest | Private | July 3, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., January 26, 1864 |
| Pile, John C. | Private | July 24, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Peck, Daniel | Private | July 24, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Roper, George W. | Private | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Reeves, Adelbert | Private | July 3, 1863 | Transferred to Company I, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Rushenberger, Geo. | Private | July 24, 1863 | Transferred to Company I, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Sumstin, Fred’k. | Private | July 24, 1863 | Mustered out with Company, February 20, 1864 |
| Samuelson, Chas. J. | Private | July 3, 1863 | Mustered out with companrly, February 20, 1864 |
| Steele, George W. | Private | July 23, 1863 | Mustered out with Company, February 20, 1864 |
| Shephard, Elijah | Private | July 30, 1863 | Mustered out with Company, February 20, 1864 |
| Smith, James | Private | July 24, 1863 | Mustered out with Company, February 20, 1864 |
| Shallis, Alexander | Private | July 24, 1863 | Mustered out with Company, February 20, 1864 |
| Shunk, Nicholas | Private | July 24, 1863 | Transferred to Company I, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Sheaffer, Henry | Private | July 24, 1863 | Transferred to Company I, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Stokes, Joseph | Private | do July 3, 1863 | Transferred to Company I, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Steen, William M. | Private | July 3, 1863 | Deserted July 10, 1863 |
| Taynman, William | Private | July 24, 1863 | Mustered out with Company, February 20, 1864 |
| Vanmarter, Judson | Private | July 3, 1863 | Absent, sick, at muster out |
| Walling, John Z. | Private | July 24, 1863 | Mustered out with Company, February 20, 1864 |
| Wardner, Vinton B. | Private | July 3, 1863 | Mustered out with Company, February 20, 1864 |
| Walker, Charles E. | Private | July 24, 1863 | Transferred to Company E, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Way, Harmon | Private | July 24, 1863 | Transferred to Company I, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Wooley, James | Private | July 2, 1863 | Transferred to Company E, 182d, 182d, 3 years’ Regiment P. V., February 20, 1864 |
| Youngs, Charles R. | Private | August 1, 1863 | Mustered out with conpany, February 20, 1864 |
Source: Bates, Samuel P. History of the Pennsylvania Volunteers, 1861-65, Harrisburg, 1868-1871.