Name
- Schöles, —, military draughtsman1
- Secunder, —, Sheikh military draughtsman1
- Senhouse, Humphrey, Knight, naval officer, 1781-18411
- Sezeluc, —, French military engineer1
- Shaw, Claudius, Colonel artillery commander for British auxiliary legion in Portuguese civil war1
- Sheeney, W, of the Quartermaster General's Dept1
- Shepstone, Theophilus, KCMG1
- Sherson, A N, 72nd Highland Regt1
- Shrapnel, Henry, Lieutenant-General inventor of shrapnel1
- Shute, —, Captain Deputy Assistant Quartermaster General1
- Siborn, W1
- Skelton, J, cartographer1
- Skinner, William, Lieutenant-General RE1
- Small, John, surveyor1
- Smith, E D, Major Chief Engineer of Gwalior1
- Smith, E, Brigadier1
- Smith, W H, Captain1
- Smyth, Edward C, acting 2nd master HMS Miranda1
- Smyth, James Carmichael-, 1st Baronet, army officer and colonial governor, 1779-18381
- Soter, Denis Julien, army officer and French royalist, fl 1747-17931