| Soria | Fernández | 1915 | Campesino | | | BDST 14 |
| Solozabal | Ormastea | 1916 | denda-saltzailea/dependiente | | | BDST 38 |
| Solís | Sánchez | 1916 | - | | | BB.TT. 106 |
| Soler | Gilabert | 0 | - | | | Hospital Militar Disciplinario |
| Soler | Mañez | 1915 | Ebanista | | | BDST 12 |
| Soler | López | 1915 | Comerciante | | | BDST 12 |
| Soler | Ferrandis | 1915 | Jornalero | | | BDST 12 |
| Solé | Marquilles | - | - | | | Hospital Militar Disciplinario |
| Solanilla | Muñoz | 1916 | jornalaria/jornalero | | | BDST 6 |
| Solaegui | Arrien | 1916 | nekazaria/labrador | | | BDST 38 |
| Sobrino | Valmaseda | 1919 | * | | | BB.TT. 100 |
| Sobrino | Carrote | 1915 | Jornalero | | | BDST 13 |
| Sirvent | Jordana | 1916 | - | | | BB.TT. 127 |
| Simón | López | 1916 | landa-langilea campo | | | BDST 6 |
| Simón | Milán | 1917 | * | | | BB.TT. 100 |
| Simón | Soler | 1915 | * | | | BDST 12 |
| Silloniz | Madarieta | 1916 | metalurgikoa/metalúrgico | | | BDST 38 |
| Sierra | Aguilar | 1916 | landa-langilea campo | | | BDST 6 |
| Sierra | Alvarez | 1917 | * | | | BB.TT. 3 |
| Sierra | Arena | 1920 | * | | | BB.TT. 100 |
| Sierra | Quintana | 1916 | Minero | | | BDST 14 |
| Sevilleja | García | 1915 | Labrador | | | BDST 14 |
| Sevilla | Terrés | 1915 | * | | | BDST 12 |
| Sevilla | Paje | 1915 | Dependiente | | | BDST 14 |
| Severo | Zupiola | 1915 | Campesino | | | BDST 14 |
| Sesé | Cayuela | 1915 | Albañil | | | BDST 12 |
| Serrat | Roda | 1915 | * | | | BB.TT. 3 |
| Serrano | Aranda | 1916 | landa-langilea campo | | | BDST 6 |
| Serrano | Gallego | 1916 | landa-langilea campo | | | BDST 6 |
| Serrano | García | 1916 | landa-langilea campo | | | BDST 6 |
| Serrano | Grima | 1916 | landa-langilea campo | | | BDST 6 |
| Serrano | Padilla | 1916 | txoferra /chofer | | | BDST 6 |
| Serrano | Dentells | 1919 | - | | | BB.TT. 127 |
| Serrano | Santos | 1916 | jornalaria /jornalero | | | BDST 38 |
| Serrano | Gómez | - | - | | | Hospital Militar Disciplinario |
| Serrano | Soria | 1919 | * | | | BB.TT. 100 |
| Serrano | Soladana | 1920 | * | | | BB.TT. 100 |
| Serrano | González | 1915 | Campesino | | | BDST 13 |
| Serrano | Soriano | 1915 | Oficinista | | | BDST 13 |
| Serrano | Fernández | 1915 | Campesino | | | BDST 14 |
| Serrano | Guerrero | 1915 | Varios | | | BDST 14 |
| Serrano | Sánchez | 1915 | Ladrillero | | | BDST 14 |
| Serra | Vilasarau | 1916 | * | | | BB.TT. 3 |
| Serra | Reiné | 1920 | * | | | BB.TT. 3 |
| Serra | García | 1915 | Peluquero | | | BDST 12 |
| Serna | García | 1916 | landa-langilea campo | | | BDST 6 |
| Serna | González | 1916 | landa-langilea campo | | | BDST 6 |
| Serna | - | - | - | | | BDST 6 |
| Serna | Mora | 1918 | * | | | BB.TT. 100 |
| Serna | Gil | 1919 | * | | | BB.TT. 100 |