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I. Historical Timeline<br />
1914<br />
1915<br />
June 28 Assassination of Archduke Franz Ferdinand, heir to the throne of Austro-Hungarian empire, in<br />
Sarajevo, Bosnia<br />
July 28 Austria-Hungary declares war on Serbia<br />
July 29 – December 9 Austria-Hungary repeatedly invades Serbia but is repeatedly repulsed<br />
August 1 Outbreak of warGermany declares war on Russia<br />
August 3 Germany declares war on France<br />
August 4 Germany invades neutral Belgium<br />
August 4 Britain declares war on Germany<br />
August 4 US President Woodrow Wilson declares policy of US neutrality<br />
August 14 Battle of the Frontiers begins<br />
August 17–19 Russia invades East Prussia<br />
August 23 Japan declares war on Germany<br />
August 23 – September 2 Austria-Hungary invades Russian Poland (Galicia)<br />
August 26–30 Battle of Tannenberg, which Russia loses; Germany’s greatest success of the war on Eastern Front<br />
September 5–10 First Battle of Marne, halts German advance, resulting in stalemate and trench warfare<br />
September 9–14 First Battle of Masurian Lakes, which Russia again loses<br />
September 14 First Battle of Aisne begins<br />
September 15 – November 24 The “race to the sea”, trenches appear on September 15<br />
September 17–28 Austro-German attack western Poland<br />
October 14 – November 22 First Battle of Ypres<br />
October 29 Turkey enters the war on the side of the Central Powers<br />
December 8 Battle of the Falkland Islands<br />
December 21 First German air raid on Britain<br />
December 25 Unofficial Christmas truce declared by soldiers along the Western Front<br />
January 1 – March 30 Allied offensive in Artois and Champagne<br />
January 15 Japan’s 21 demands on China<br />
January 19–20 First German zeppelin attack on England<br />
February 4 German U-boat attacks on Allied and neutral shipping; declares blockade of Britain<br />
February 7-21 Russians suffer heavy losses at Second Battle of Masurian Lakes (also known as the Winter Battle)<br />
February – April Austro-Hungarian attack on Russian Poland (Galicia) collapses, with the Russians counterattacking<br />
February 19–August Allied amphibious attack on the Dardanelles and Gallipoli (initiated by Winston Churchill, who resigns as a<br />
consequence) ends with the Turkish siege of the Allied forces<br />
March 1 First passenger ship sinks, the British liner Falaba<br />
March 11 Britain announces blockade of German ports<br />
April–June Germans focus on Eastern Front, breaking through Gorlice-Tarnow and forcing Russia out of much of Poland<br />
April 22 – May 25 First use of poison gas by Germany starts Second Battle of Ypres<br />
April 25 Allied landing at Gallipoli<br />
April 26 France, Russia, Italy and Britain conclude secret Treaty of London<br />
May 2 Austro-German offensive on Galicia begins<br />
May 7 U-boat sinks British liner Lusitania with the loss of American lives, creating a US-German diplomatic crisis<br />
May 9 Second Battle of Artois begins<br />
May 23 Ignoring treaty agreements with the Central Powers, Italy declares war on Austria-Hungary<br />
May 25 British Prime Minister Asquith reorganises his Liberal government as a coalition of the parties<br />
June 29 – December 2 Italians launch unsuccessful attack on Hungarians at 1st, 2nd, 3rd & 4th Battles of Isonzo; there are to be<br />
12 in total<br />
222 World War One: La Grande Guerre 1914-1918
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