Military

S.A.S.

SA80

SA80: British bullpup service rifle family

Saab JAS 39 Gripen

Sabre

Saiga-12

Salients, re-entrants and pockets

Salients, Re-entrants, and Pockets in Military Operations and Fortifications

Samurai

Schlieffen Plan

Schlieffen Plan: Germany’s pre‑1914 strategy for a rapid victory in the west

Schwerer Gustav

Schwerer Gustav — German 80 cm railway siege gun

Scimitar

Scimitar — Curved single-edged sword of the Middle East and beyond

Scorched earth

Scorched-earth policy

Second Anglo-Mysore War

Second Anglo-Mysore War (1780–1784): Mysore vs British East India Company

Second Battle of Bull Run

Second Battle of Bull Run (Second Manassas)

Second-in-command

Second-in-Command (2IC): role, responsibilities and variations

Semi-automatic rifle

Semper Fidelis

Sentai

Sentai: Japanese military unit and tokusatsu team genre

Sepoy

Sergeant

Sergeant First Class

Shell (projectile)

Sherman's March to the Sea

Sherman's March to the Sea (Savannah Campaign, November–December 1864)

Shield

Ship of the line

Shock tactics

Shock Tactics in Warfare: History, Methods, and Strategic Impact

Shogun

Shogun: Japan’s military rulers and the bakufu system

Shooting

Shooting (firearms, archery, artillery and projectile use)

Shotgun shell

Siege

Siege of Odessa (1941)

Siege of Tobruk

Siege of Tobruk (April–November 1941)

Sikorsky SH-3 Sea King

Singapore Armed Forces

Singapore Armed Forces (SAF)

Sino-Indian War

Sino-Vietnamese War

Sino–Vietnamese War (1979)

Skirmisher

Skirmisher (military role)

SKS

Sling (weapon)

Sling (weapon) — hand-thrown projectile device

Small arms

Smith & Wesson M&P

Smoke grenade

Smoothbore

Smoothbore: definition, characteristics, history and uses

Sniper

Sniper rifle

Sniper team

Soldier

Soldier: role, types, history and duties

Soldier, Iowa

Soldier, Iowa — small city in western Iowa with rural character

Sopwith Camel

Sopwith Camel: British World War I Fighter Biplane