| Last Name | First / Middle Name | Rank / Unit |
Date Left | Comments |
|
|
| Saunders | John S. | 2 lt ord | 22 Apr 1861 | graduate of the U.S. Military Academy
|
| Selden | Joseph | capt 8 inf | 27 Apr 1861 |
|
| Shaaff | Arthur | 2 lt 4 inf | 10 Jul 1861 |
|
| Shaaff | John T. | 1 lt 2 cav | 22 Feb 1861 | graduate of the U.S. Military Academy
|
| Sibley | Henry H. | maj 1 drgs | 13 May 1861 | graduate of the U.S. Military Academy
|
| Slaughter | James E. | 1 lt 1 art | 14 May 1861 . |
|
| Sloan | Benjamin F. | bvt 2 lt 2 drgs | 02 Mar 1861 | graduate of the U.S. Military Academy
|
| Smead | Abner | 1 lt 1 art | 11 Apr 1861. | graduate of the U.S. Military Academy
|
| Smith | Albert J. | maj paymr | 20 Jun 1861 |
|
| Smith | Caleb | 1 lt 2 inf | 03 May 1861 |
|
| Smith | Charles H. | asst Burg | 25 Apr 1861 |
|
| Smith | Edmund K. | maj 2 cav | 06 Apr 1861 | graduate of the U.S. Military Academy
|
| Smith | James A. | 1 lt 6 inf | 09 May 1861 | graduate of the U.S. Military Academy
|
| Smith | Larkin | capt 8 inf | 13 May 1861 | graduate of the U.S. Military Academy
|
| Smith | Martin L. | capt topl engrs | 01 Apr 1861 | graduate of the U.S. Military Academy
|
| Smith | William D. | capt 2 drgs | 28 Jan 1861 | graduate of the U.S. Military Academy
|
| Smith | William P. | bvt 2 lt topl engrs | 27 Apr 1861 | graduate of the U.S. Military Academy
|
| Steele | William | capt 2 drgs | 30 May 1861 | graduate of the U.S. Military Academy
|
| Steen | Alexander E. | 1 lt 3 inf | 10 May 1861 |
|
| Steuart | George H. | capt 2 drgs | 22 Apr 1861 | graduate of the U.S. Military Academy
|
| Stevens | Walter H. | 1 lt engrs | 02 May 1861 | graduate of the U.S. Military Academy
|
| Stevenson | Carter L. | capt 5 inf | 25 Jun 1861 | graduate of the U.S. Military Academy
|
| Stith | Donald C. | capt 5 inf | 25 Sep 1861 | graduate of the U.S. Military Academy
|
| Stockton | Philip | 1 lt 1 cav | 27 Feb 1861 | graduate of the U.S. Military Academy
|
| Stuart | James E. B. | capt 1 cav | 14 May 1861 | graduate of the U.S. Military Academy
|
