Timeline of World War 1
Key events of the First World War, 1914-1918
28 Jun 1914:
Austrian Archduke Franz Ferdinand is assassinated at Sarajevo
5 Jul 1914:
Kaiser William II promises German support for Austria against Serbia
28 Jul 1914:
Austria-Hungary declares war on Serbia
1 Aug 1914:
Germany declares war on Russia
3 Aug 1914:
Germany declares war on France
4 Aug 1914:
Germany invades Belgium, starting World War 1
4 Aug 1914:
Britain declares war on Germany
6 Aug 1914:
Austria-Hungary declares war on Russia
6 Aug 1914:
Serbia declares war on Germany
8 Aug 1914:
British and French forces invade Togoland
19 Aug 1914:
President Woodrow Wilson announces the US will remain neutral
23 Aug 1914:
Germany invades France
26 Aug 1914:
Russian army is defeated at Tannenburg and Masurian Lakes
7 Sep 1914:
Trench warfare starts with the Battle of the Marne
18 Oct 1914:
First Battle of Ypres
1 Nov 1914:
British ships, the Monmouth and Good Hope, are sunk by a German squadron
24 Dec 1914:
The unofficial Christmas truce is declared
19 Jan 1915:
The first Zeppelin raid on Britain takes place
19 Feb 1915:
Britain bombards Turkish forts in the Dardanelles
25 Apr 1915:
Allied troops land in Gallipoli
7 May 1915:
The RMS Lusitania is sunk by a German U-boat
23 May 1915:
Italy declares war on Germany and Austria
5 Aug 1915:
The Germans capture Warsaw from the Russians
25 Sep 1915:
Start of the Battle of Loos
19 Dec 1915:
The Allies start the evacuation of Gallipoli
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Timeline of World War 1
Key events of the First World War, 1914-1918