Dates
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Events
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January 2
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The Russian offensive in the Carpathians begins. It will continue until April 12.
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January 18–19
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Battle of Jassin.
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January 19
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First Zeppelin raid on Great Britain.
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January 19-December 22
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Battle of Hartmannswillerkopf, series of battles fought to control the peak.
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January 24
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Battle of Dogger Bank between squadrons of the British Grand Fleet and the German Hochseeflotte.
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January 24-January 26
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Chilembwe uprising led by John Chilembwe in Nyasaland.
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January 28–February 3
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The Ottomans fail to capture the Suez Canal.
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January 31
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Battle of Bolimov. First German use of chemical weapons.
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February 4
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Germany begins unrestricted submarine warfare against merchant vessels.
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February 7–February 22
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Second Battle of the Masurian Lakes. The Russian X Army is defeated.
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February 19
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British and French naval attack on the Dardanelles. The Gallipoli Campaign begins.
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March 10–March 13
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Battle of Neuve Chapelle. After an initial success, a British offensive is halted.
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March 22
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The Siege of Przemyśl ends. The Russians capture the fortress.
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April 5-May 5
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First Battle of Woevre.
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April 12-April 14
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Battle of Shaiba.
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April 19-May 17
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The Ottomans besiege the Armenian city of Van.
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April 22–May 25
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The Second Battle of Ypres, which ends in a stalemate. Germany first uses the poison gas.
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April 22-April 23
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Battle of Gravenstafel, First stage of the Second Battle of Ypres.
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April 24-May 5
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Battle of St Julien, part of the Second Battle of Ypres.
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April 25
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Allied forces land on Gallipoli, landing at Anzac Cove and Cape Helles.
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London Pact between the Entente and Italy.
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April 28
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First Battle of Krithia. The Allied advance is repelled.
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May 1
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The Gorlice-Tarnów begins: the German troops under General Mackensen break through the Russian lines in Galicia.
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Battle of Eski Hissarlik.
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May 3
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Troops withdraw from Anzac Cove.
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May 6–May 8
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Second Battle of Krithia. The Allied attempts at advancing are thwarted again.
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May 7
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The British liner Lusitania is sunk by a German U-boat.
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May 8-May 13
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Battle of Frezenberg Ridge, Part of the Second Battle of Ypres.
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May 9-June 18
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Second Battle of Artois.
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May 9
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Battle of Aubers Ridge, a phase of the Second Battle of Artois.
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May 10
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Troops from Hungary rout the Russians at Jarosław. Lviv is again in Austrian hands.
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May 11
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Armistice called at Gallipoli to bury the dead.
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May 12
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Windhoek, capital of German South-West Africa, is occupied by South African troops.
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May 15-May 25
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Battle of Festubert.
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May 16-June 23
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Battle of Konary.
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May 23
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Italy declares war on Austria-Hungary.
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May 24-May 25
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Battle of Bellewaarde, final phase of the Second Battle of Ypres.
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June 4
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Third Battle of Krithia. Yet another Allied failure.
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The Russians leave Przemyśl.
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June 10-June 26
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Battle of Manzikert.
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June 21-June 23
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Battle of Bukoba.
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June 22
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Mackensen breaks again through the Russian lines in the Lviv area.
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June 23–July 7
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First Battle of the Isonzo.
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June 27
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The Austro-Hungarians re-enter Lviv.
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June 28–July 5
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The British win the Battle of Gully Ravine.
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June–September
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The Russian Great Retreat from Poland and Galicia.
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July 9
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The German forces in South-West Africa surrender.
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July
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Battle of Kara Killisse.
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July 18–August 3
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Second Battle of the Isonzo.
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July 25
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Italians capture Cappuccio Wood.
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August 5
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The Germans occupy Warsaw.
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August 6-August 10
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Battle of Lone Pine, part of the August Offensive.
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August 6-August 13
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Battle of Krithia Vineyard, part of the August Offensive.
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August 6-August 15
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Allies land at Suvla Bay, a phase of the August Offensive.
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August 6–August 21
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Battle of Sari Bair, part of the August Offensive. Last and unsuccessful attempt by the British to seize the Gallipoli peninsula.
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August 7
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Battle of the Nek, a phase of the August Offensive.
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August 7-August 19
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Battle of Chunuk Bair, a phase of the August Offensive.
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August 21
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Scimitar Hill, a phase of the August Offensive.
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August 21-August 29
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Battle of Hill 60, part of the August Offensive.
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August 26-September 19
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Sventiany Offensive, a phase of the Gorlice-Tarnow Offensive.
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September 1
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Germany suspends unrestricted submarine warfare.
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September 8
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Nicholas II removes Grand Duke Nicholas Nikolayevich as Commander-in-Chief of the Russian Army, personally taking that position.
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September 15-November 4
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Third Battle of Artois.
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September 19
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The Germans occupy Vilnius. The Gorlice-Tarnów Offensive ends.
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September 25–September 28
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Battle of Loos, a major British offensive, fails.
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September 25-October 15
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Battle of the Hohenzollern Redoubt, a phase of the Battle of Loos.
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September 25-November 6
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Second Battle of Champagne.
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September 28
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Battle of Es Sinn.
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October 7-December 4
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Serbia is invaded by Germany, Austria-Hungary, and Bulgaria.
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October 14
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Bulgaria declares war on Serbia
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October 14-November 9
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Morava Offensive, a phase of the Central Powers Invasion of Serbia, Bulgarians break through Serbian lines.
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October 14-November 15
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Ovche Pole Offensive, a phase of the Central Powers invasion of Serbia, Bulgarians break through Serbian lines.
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October 15
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The United Kingdom declares war on Bulgaria.
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October 16
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France declares war on Bulgaria.
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October 17-November 21
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Battle of Krivolak, start of the set up of the Salonika Front.
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October 18–November 4
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Third Battle of the Isonzo
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October 19
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Italy and Russia declare war on Bulgaria.
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October 27
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A French army lands in Salonika and, with the help of British and Italian troops, sets up a Balkan Front.
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November 10–December 2
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Fourth Battle of the Isonzo
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November 10-December 4
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Kosovo Offensive, a phase of the Central Powers invasion of Serbia, Serbians pushed into Albania.
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November 22–November 25
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Battle of Ctesiphon, in present-day Iraq.
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November 27
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The Serbian army collapses. It will retreat to the Adriatic Sea and be evacuated by the Italian and French Navies.
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December–July, 1916
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Battle of Lake Tanganyika.
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December 6-December 12
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Battle of Kosturino
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December 7
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The First Siege of Kut, Mesopotamia, by the Ottomans begins.
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December 19
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Douglas Haig replaces John French as commander of the British Expeditionary Force.
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