The assassination of Archduke Franz Ferdinand of Austria took place in in Sarajevo, the capital of the Austro-Hungarian province of Bosnia and Herzegovina
First Battle of Ypres - British lost a vast number of troops
Unofficial Christmas Truce was announced
Second Battle of Ypres
Warsaw was captured by Germany
Allies started evacuation of their troops from Gallipoli
Battle of the Somme commenced
- Battle of the Somme ended as inconclusive but great losses on both sides
Battle of Verdun ended - inconclusive but massive losses on both sides
USA declared war on Germany
Battle of Passchendaele also known as the Third Battle of Ypres
