Timeline
1914 1915 1916 1917 1918 1919
June 28,1914
Archduke Franz Ferdinand heir to the throne of the Austro-Hungarian Empire, and his wife are assassinated in Sarajevo.
July 28
Emperor Franz Joseph of Austria-Hungary declares war on Serbia.
July 31
As an ally of Serbia, Russia announces full mobilization of her armed forces.
August 1
Germany mobilizes her armed forces and declares war on Russia.
August 3
Germany declares war on France.
August 4
Germany declares war on neutral Belgium and invades in a right flanking move designed to defeat France quickly. As a result of this invasion, Britain declares war on Germany.
August 6
Austria-Hungary declares war on Russia.
August 22
"The Battle of the Frontiers" -- 27,000 French soldiers die on this single day in an offensive thrust to the east of Paris, towards the German borders.
August 26-30
German army, led by Erich Ludendorff and Paul von Hindenburgachieves its greatest victory of the war on the Eastern front against Russia at the Battle of Tennenberg.
September 5-10
First Battle of the Marne halts German invasion in France.
September 15
First trenches of the Western front are dug.
December 25
Unofficial Christmas Truce declared by soldiers in the trenches along the Western Front.
Archduke Franz Ferdinand heir to the throne of the Austro-Hungarian Empire, and his wife are assassinated in Sarajevo.
July 28
Emperor Franz Joseph of Austria-Hungary declares war on Serbia.
July 31
As an ally of Serbia, Russia announces full mobilization of her armed forces.
August 1
Germany mobilizes her armed forces and declares war on Russia.
August 3
Germany declares war on France.
August 4
Germany declares war on neutral Belgium and invades in a right flanking move designed to defeat France quickly. As a result of this invasion, Britain declares war on Germany.
August 6
Austria-Hungary declares war on Russia.
August 22
"The Battle of the Frontiers" -- 27,000 French soldiers die on this single day in an offensive thrust to the east of Paris, towards the German borders.
August 26-30
German army, led by Erich Ludendorff and Paul von Hindenburgachieves its greatest victory of the war on the Eastern front against Russia at the Battle of Tennenberg.
September 5-10
First Battle of the Marne halts German invasion in France.
September 15
First trenches of the Western front are dug.
December 25
Unofficial Christmas Truce declared by soldiers in the trenches along the Western Front.
All the information that is found on the Timeline pages are from pbs: http://www.pbs.org/greatwar/timeline/index.html