WW1

Assassination of Archduke Ferdinand

Jun 28, 1914

Archduke Ferdinand was Assassinated

Serbia Appeals

Jul 24, 1914

Serbia Appeals to Russia for help

German Troops Enter Belgium

Aug 4, 1914

(https://spartacus-educational.com/FWWbelgiumIN.htm_

Invasion of Serbia

Aug 12, 1914

(https://spartacus-educational.com/FWWbalkan.htm)

Gallipoli Campaign

Period: Feb 19, 1915 to Jan 9, 1916

Gallipoli

Battle of Verdun

Period: Feb 21, 1916 to Dec 18, 1916

Verdun

Battle of the Somme

Period: Apr 1, 1916 to Nov 18, 1816

Somme

First Battle of the Marne

Period: Sep 6, 1916 to Sep 10, 1916

Marne

US Declares War on the German Empire

Jul 6, 1917

War on the German Empire

Austria-Hungary Declares War on Serbia

Jul 28, 1917

[Austria War on Serbia]

US Declares Wars on Austria-Hungary

Dec 7, 1917

[War on Austria-Hungary
(https://www.centenarynews.com/article/the-us-declares-war-on-austria-hungary-7-december-1917)

Spring Offensive

Period: Mar 21, 1918 to Apr 18, 1918

Spring Offensive

Armistice Day

Nov 11, 1918

Armistice Day

Treaty of Versailles

Period: Jun 28, 1919 to May 21, 2020

signing of the treaty