Compiled Service Records of Civil War Soldiers by Surname: U
| Soldier | Country | State | Regiment | Unit(s) | Rank In | Rank Out | Reel | 
| Uker, William | Confederate | Florida | Third Infantry | D | Private | Private | M251-52 | 
| Ulmer, Charles P. | Confederate | Florida | Third Infantry | H | Private | Corporal | M251-52 | 
| Ulmer, John | Confederate | Florida | Third Battalion, Cavalry | A | Second Lieutenant | Second Lieutenant | M251-15 | 
| Ulmer, Joseph L. | Confederate | Florida | Third Infantry | D | Private | Sergeant | M251-52 | 
| Ulmer, S. V. | Confederate | Florida | Second Cavalry | D | Private | Private | M251-13 | 
| Ulrich, John | Confederate | Florida | Milton Light Artillery |  | Private | Private | M251-20 | 
| Umsted, George W. | Confederate | Florida | Fifth Infantry | B | Private | Private | M251-68 | 
| Underhill, Henry | Confederate | Florida | Tenth Infantry | E | Private | Private | M251-98 | 
| Underhill, J. | Confederate | Florida | Fifth Battalion, Cavalry | H | Private | Private | M251-18 | 
| Underhill, Jerry | Confederate | Florida | Seventh Infantry | B | Private | Private | M251-80 | 
| Underhill, John | Confederate | Florida | Eighth Infantry | K | Private | Private | M251-86 | 
| Underhill, John | Confederate | Florida | Seventh Infantry | E | Private | Private | M251-80 | 
| Underhill, William | Confederate | Florida | Second Cavalry | K | Private | Private | M251-13 | 
| Underwood, James M. | Confederate | Florida | Second Infantry | I | Third Lieutenant | First Lieutenant | M251-42 | 
| Underwood, James M. | Confederate | Florida | Second Infantry | I | Third Lieutenant | First Lieutenant | M251-42 | 
| Underwood, John | Confederate | Florida | Eleventh Infantry | L | Corporal | Corporal | M251-102 | 
| Underwood, P. M. | Confederate | Florida | Second Infantry | F | Private | Private | M251-42 | 
| Underwood, Thomas | Confederate | Florida | First Cavalry | C | Private | Private | M251-4 | 
| Underwood, W. H. | Confederate | Florida | Second Battalion, Infantry | C | Corporal | Sergeant | M251-45 | 
| Underwood, William H. | Confederate | Florida | Tenth Infantry | H | First Sergeant | Sergeant | M251-98 | 
| Underwood, William H. | Confederate | Florida | Tenth Infantry | H | First Sergeant | Sergeant | M251-98 | 
| Union, John T. | Confederate | Florida | Third Infantry | K | Private | Private | M251-52 | 
| Upchurch, Calvin | Confederate | Florida | Eighth Infantry | G | Private | Private | M251-86 | 
| Upchurch, N. S. | Confederate | Florida | Second Cavalry | K | Private | Private | M251-13 | 
| Upson, John D. | Confederate | Florida | Second Cavalry | C | Private | Private | M251-13 | 
| Urguhart, G. W. | Confederate | Florida | (Misc. Infantry Companies) |  | Private | Private | M251-103 | 
| Urguhart, Norman B. | Confederate | Florida | Second Cavalry | A | Private | Private | M251-13 | 
| Urquhart, J. Capers | Confederate | Florida | Eighth Infantry | C | Private | Private | M251-86 | 
| Urwich, Barnett | Confederate | Florida | Second Infantry | G | Private | Private | M251-42 | 
| Usina, Domingo | Confederate | Florida | Third Infantry | B | Private | Private | M251-52 | 
| Usina, John | Confederate | Florida | Second Battalion, Infantry | B | Sergeant | Sergeant | M251-45 | 
| Usina, Michael | Confederate | Florida | Third Infantry | B | Private | Private | M251-52 | 
| Usina, Michael S. | Confederate | Florida | Third Infantry | B | Private | Private | M251-52 | 
| Ussery, A. P. | Confederate | Florida | Second Infantry | B | Private | Private | M251-42 |