September 14, 1862 in History
- Battle at Crampton's Gap: Union troops win a tactical victory over Confederate forces
- Battle at South Mountain: Union troops defeat an outnumbered Confederate force
- Battle of Munfordville, Kentucky, begins
- Federal troops escape from beleaguered Harpers Ferry, West Virginia
- Skirmish at Fox's Gap, American Civil War
- Jesse Lee Reno, Union general-major (Reno Nevada), dies at 39
- Samuel Garland Jr, American Brigadier General (Confederate Army), dies in battle at 31