Name
- Schrader, John Daniel Matthias, military draughtsman1
- Schultz, B F, military draughtsman, fl after 17061
- Schurhard, J F, military draughtsman1
- Schöles, —, military draughtsman1
- Seckendorff, Friedrich Heinrich von, Count Imperial field-marshal1
- 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