George McClellan
J.E.B. Stuart
- Oct 12 Major General Earl Van Dorn assumes command of Confederate troops in Mississippi
- Oct 12 Skirmish at Monocacy, Maryland
- Oct 14 Baseballer James Creighton ruptures bladder hitting HR, dies 10/18
- Oct 14 Excelsiors defeat Unions of Morrisania 13-9
- Oct 17 Battle of Leetown & Thoroughfare Gap, VA
- Oct 18 Morgan's raiders capture federal garrison at Lexington, KY
- Oct 20 Amnesty proclaimed for escaped slaves of Suriname
- Oct 22 Battle at Old Fort Wayne, Indian Territory
- Oct 22 Confederate troops reconquer Cumperland Gap, Tennessee