29 August

Western Front

 * Stiff French rearguard fights.
 * British retire to line Compiègne-Soissons.
 * Germans occupy La Fère, Rethel, Amiens, etc.

Eastern Front

 * East Prussia: Battle of Tannenberg ends in the rout of Samsonov's Second Army.

Naval and Overseas Operations

 * Cameroons: British reverse at Garua.
 * Samoa: German portion occupied by New Zealand troops.