Timeline
1914
1915
1916
1917
1918
1919
1920

January February March April May June July August September October November December
 
1 German declaration of unrestricted submarine warfare
24 British forces recapture Kut

   
11 British forces capture Baghdad
12 Start of the Russian revolution
15 Abdication of Tsar Nicholas II
3 Lenin smuggled back into Russia on a German military train
6 USA declares war on Germany
9 Battle of Arras starts (ends 15 May)
16-20 Nivelle offensive
25 First Gotha aeroplane raid on England
   
   
13 Daylight Gotha raid on London, killing 162 civilians
   
   
1 Beginning of Kerensky offensive on the Eastern front
7 Daylight Gotha raid on London, killing 57 civilians
31 3rd Battle of Ypres (also known as the Battle of Passchendaele) starts (ends 10 Nov)
 
3 Germans capture Riga
   
   
24 Battle of Caporetto (also known as the 12th Isonzo) starts (ends 12 Nov)
   
   
2 British government issues the Balfour Declaration
6-8 Bolshevik seizure of power in Petrograd
7 British capture Gaza
16 Clemenceau becomes French prime minister
20 Battle of Cambrai starts (ends 7 Dec)
9 British capture Jerusalem
15 Russia signs an armistice with Germany
   
1914
1915
1916
1917
1918
1919
1920