| Date | Event |
|---|---|
| October 03 1912 | Nicaraguan Rebels Are Defeated By U.S. Forces |
| October 07 1912 | Helsinki Stock Exchange Opens |
| October 08 1912 | Montenegro Declares War Against Ottoman |
| October 11 1912 | Greek Army Liberates City Of Kozani |
| October 14 1912 | Teddy Roosevelt Shot, Mildly Wounded By Schrank |
| October 17 1912 | Four Countries Against Ottomans In Balkan War |
| October 18 1912 | King Peter Issues Declaration And Joins War |
| October 19 1912 | Italy Takes Tripoli, Libya |
| October 21 1912 | During First Balken War Kardzhali Liberated By Bulgaria |
| October 23 1912 | Balkans: Battle Of Kumanovo Begins |
| October 24 1912 | Serbians Win Battle Of Kumanovo |
| October 26 1912 | Serbia Captures Skopje; Thessaloniki Freed On Greek Holiday |