7 September

1914

 * Battle of the Marne (continued). Struggle on the Ourcq and Petit-Morin.
 * Mauberge captured by the Germans with many prisoners and guns.
 * Sir John French's first despatch (published on 9 September).
 * Galicia: Fresh struggle round Grodek: Russian cavalry reach the Carpathians.
 * Second Austrian invasion of Serbia begins: the Drina crossed in force.
 * No East Africa: German reverse near Tsavo.
 * Pacific cable cut between Banfield and Fanning Island by Nürnberg.

1915

 * Zeppelin air raid on East Suffolk and London begins.