Assassination of Franz Ferdinand
1914
Austro-Hungarian forces march on Belgrade
1914
First Battle of Ypres
1914
Battle of Łódź
1914
Benedict XV calls for a Christmas Truce
1914
Sinking of RMS Lusitania (off the coast)
1915
Gallipoli Campaign
1915-1916
Battle of Verdun
1916
Battle of Jutland (off the coast)
1916
Death of Franz Joseph I
1916
Arthur Zimmermann sends a telegram to Mexico
1917
Constantine I abdicates
1917
George V renames dynasty 'House of Windsor'
1917
Finland declares independence
1917
Treaty of Brest-Litovsk signed
1918
Execution of Nicholas II and Alexandra
1918
Battle of Vittorio Veneto
1918
Aster Revolution in Budapest
1918
Queen Wilhelmina grants asylum to Kaiser Wilhelm II
1918
Transylvania officially joins this country
1918