31 October

Western Front

 * Battle of the Yser: French recover Ramscapelle.
 * Ypres: Crisis of the great battle. Germans take Gheluvelt and break the British line.  The Worcesters save the situation and recover Gheluvelt.

Eastern Front

 * Bukovina: Russians re-occupy Czernowitz.

Asiatic and Egyptian Theatres

 * Tsing-tau: Final intense bombardment begins.

Naval and Overseas Operations

 * HMS Hermes (cruiser) sunk in Straits of Dover.

Political

 * Italy: Resignation of Salandra Cabinet.
 * Occupation of Saseno (Albania).