10 August

1914

 * Liège: the Germans occupy the city. Alsace: French fall back; Mülhausen evacuated. Lorraine: French advance in force under General de Castelnau.
 * East Prussia: Russians reach Tilsit. Poland: Austrian First Army, under Dankl, enters Poland and advances towards Lyublin and Kyeltsi.
 * No South Africa: Germans raid Cape Colony (from south-west Africa), but abandon Swakopmund and Lüderitz Bay.
 * France declares war on Austria-Hungary.

1915

 * Zeppelin air raid on Goole, East Riding and Dover concludes. Civilian casualties: 17 killed (inc. 6 children) and 18 injured (inc. 7 children). Military casualties: 3 injured.
 * Gains at Hooge consolidated. British artillery and aircraft active on Belgian Coast.
 * Vilna and Kovna being evacuated. Novo Georgievsk and Brest Litovsk bombarded.
 * Germans reach Kaluszyn (east of Warsaw).
 * Russians dislodged north-west of Kock (Veprj); Lomja and Ostrov (Bug) in enemy hands.
 * Vigorous Italian offensive on the Isonzo. Italian advance in Ortler range (Upper Adige).
 * Feint landing at Karachali (Gulf of Saros, Gallipoli).
 * Turkish counter-attack on Chunuk Bair nearly succeeds.
 * Russians pursue Turks on Upper Euphrates and capture important height in valley of Passin.
 * No German fleet bombards Riga and is again driven off.
 * New Japanese Cabinet formed.
 * America's reply to Germany regarding the William P. Frye is despatched.
 * Duma decides on enquiry into abuses connected with munitions.
 * Bucharest refuses to authorise transport of German munitions to Turkey.