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The Great War
Prologue Chapter 1 Chapter 2 Chapter 3 Chapter 4 Timeline Maps & Battles The Shaping of the 21st Century Historians
Pre-1914 1914 1915 1916 1917 1918 1919 Post-1919
Allied ship attacked by German U-boatWWI Timeline: 1915
January, 1915

War becomes "Total War" with German Zeppelin air raid on England

February 4

Germany declares a submarine blockade of Great Britain. Any ship approaching England is considered a legitimate target.

Photo: German U boat on the hunt for Allied shipping

German U boat on the hunt for Allied shipping
April 25

Allies begin nine-month battle for the Turkish peninsula of Gallipoli.

Photo: Australian headquarters staff wading ashore at Gallipoli, 1915

Australian headquarters staff wading ashore at Gallipoli, 1915
May 7

U-boat sinks the Lusitania. 1,198 civilians, including 128 Americans die.

Photo: Mass grave for Lusitania victims

Mass grave for Lusitania victims
August 30

Germany responds to U.S. anger by ceasing to sink ships without warning.

Photo: Allied ship attacked by German U-boat

Allied ship attacked by German U-boat
September 5

Tsar Nicholas takes command of the Russian armies.

September 15

British use gas in battle near Loos, but shifting winds cause 60,000 British casualties.

Photo: Poison gas attack, Flanders, Belgium

Poison gas attack, Flanders, Belgium
December 19

Sir Douglas Haig becomes commander of British Expeditionary Force.

December 28

Allies begin withdrawal of troops from Gallipoli.

Pre-1914 1914 1915 1916 1917 1918 1919 Post-1919

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