The German forces in South-West Africa surrender unconditionally to General Botha. July 11 (Sun.) The _Königsberg_ is finally destroyed in the Rufiji River (East Africa) by British river monitors (see Oct. 30 and Nov. 10, 1914). July 13 (Tues.) The end of the Battle of Souchez (see May 9). July 14 (Wed.) The Austro-Germans launch an offensive which covers the whole Eastern Front; they capture Przasnysz (see Feb. 27). July 15 (Thur.) The Germans advance towards Riga. July 16 (Fri.) Heavy fighting on the Eastern Front; the Battle of Krasnostav begins. July 18 (Sun.) The Russians are defeated at Krasnostav. Windau (on the coast of Courland) is captured by the Germans. The Italian cruiser _Giuseppe Garibaldi_ is sunk by an Austrian submarine. July 19 (Mon.) The Third Battle for Warsaw begins (see Aug. 5). The Germans force a crossing of the Upper Bug. The Isonzo Front:--The Italians capture Monte San Michele. July 20 (Tues.) The Germans advance on Kovno (see Aug. 17). The Isonzo Front:--An Italian success at Podgora. July 21 (Wed.) A British success at Hooge. The Germans gain a crossing of the Vistula at Nova Alexandria. July 22 (Thur.) The Germans invest Ivangorod. The Isonzo Front:--The Italians continue to gain ground. July 23 (Fri.) The Germans force a crossing of the Narev. An Austrian squadron bombards Ortona (on the eastern coast of Italy). July 25 (Sun.) The Italians occupy the island of Pelagosa (Adriatic). Mesopotamia:--Nasiriyeh is captured by the British. July 26 (Mon.) There is heavy fighting before Warsaw. A British submarine sinks a German destroyer near the German coast. July 27 (Tues.) The Germans close in on three sides of Warsaw. July 28 (Wed.) The Germans cross the Vistula in force. July 29 (Thur.) The Russian line is broken on the Lublin-Cholm railway. The end of the Italian offensive on the Isonzo (see July 2); it results in a valuable advance and the capture of many prisoners by the Italians. July 30 (Fri.) A successful German attack with liquid fire (first use of this) at Hooge; a British counter-attack fails (see Aug. 9). The Austro-Germans occupy Lublin. The Russians retire rapidly. A British submarine sinks a German transport in the Baltic. July 31 (Sat.) The Austro-Germans occupy Cholm. Aug. 1 (Sun.) Mitau is occupied by the Germans (see Aug. 16). Rhodesia:--The Germans are driven back from Abercorn. Aug. 3 (Tues.) The Germans force the line of the Narev. Aug. 4 (Wed.) The Russians evacuate the Blonie lines, 15 miles west of Warsaw. Aug. 5 (Thur.) Warsaw, Ivangorod, and Vladimir Volynski are captured by the Austro-Germans (see July 19 and 22). The Russians prepare to evacuate Riga. Aug. 6 (Fri.) Gallipoli:--The Battles of Sari Bair (see Aug. 11) and Suvla (see Aug. 15) begin: the British effect a surprise landing in Suvla Bay and launch an offensive against the Turks at other points. Aug. 7 (Sat.) The Germans are repulsed near Riga.