Italian Front: Austrians take 10,000 PoWs and 24 guns cut off south of Tolmezzo from Italian XII Corps (Tassoni) until November 5 retreating from Carnia. Italians begin retreat from Tagliamento to Piave (night November 4-5), after Austrian Isonzo armies force crossings.
Flanders: Trench raids.
Verdun: Artillery in action north of Chaume Wood. German attack there on November 7, repulsed on November 10, French success there on November 19.
Petrograd: Bolshevik Military Revolutionary Committee tells garrison of 155,000 soldiers to ignore orders to go to Front.