WWl Timeline By 23tcmantz Jun 28, 1914 Franz Ferdinand assassinated https://www.history.com/news/the-assassination-of-archduke-franz-ferdinand Jul 28, 1914 The beginning of WWl Apr 22, 1915 First use of poison gas by Germany https://www.warmuseum.ca/firstworldwar/history/battles-and-fighting/weapons-on-land/poison-gas/#:~:text=The%20Germans%20unleashed%20mustard%20gas,British%20and%2020%20percent%20American. May 7, 1915 The sinking of the Lusitania https://www.history.com/news/how-the-sinking-of-lusitania-changed-wwi Feb 22, 1916 Battle of Verdun begins https://www.history.com/topics/world-war-i/battle-of-verdun May 31, 1916 Battle of Jutland https://www.history.com/topics/world-war-i/battle-of-jutland Apr 6, 1917 The United States declare war https://www.history.com/this-day-in-history/america-enters-world-war-i Aug 8, 1918 100 days offensive begins https://en.wikipedia.org/wiki/Hundred_Days_Offensive Nov 11, 1918 Armistice with Germany signed https://www.history.com/this-day-in-history/world-war-i-ends#:~:text=By%20the%20end%20of%201917,Allies%20on%20November%2011%2C%201918. Jun 28, 1919 Treaty of Versailles signed https://www.history.com/topics/world-war-i/treaty-of-versailles-1