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The Assassination of Archduke Ferdinand
The assassination of Archduke Franz Ferdinand of Austria, heir presumptive to the Austro-Hungarian throne, and his wife Sophie, Duchess of Hohenberg, occurred on 28 June 1914 in Sarajevo when they were mortally wounded by Gavrilo Princip.(https://www.history.com/news/the-assassination-of-archduke-franz-ferdinand-100-years-ago) -
Austria-Hungary declares war on Serbia
On July 28, 1914, one month to the day after Archduke Franz Ferdinand of Austria and his wife were killed by a Serbian nationalist in Sarajevo, Austria-Hungary declares war on Serbia, effectively beginning the First World War.(https://www.rte.ie/centuryireland/index.php/articles/austria-hungary-declares-war-on-serbia) -
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First Battle of the Marne
German invasion of France is stopped in the First Battle of the Marne as German troops are forced to the north side of the Marne River, causing the the Schlieffen Plan to fail.(The Battle of the Marne (French: Première bataille de la Marne, also known as the Miracle of the Marne, Le Miracle de la Marne) was a World War I battle fought from 6–10 September 1914. It resulted in an Allied victory against the German armies in the west.) -
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Battle of Tannenberg
The Battle of Tannenberg was fought between Russia and Germany between the 26th and 30th of August 1914, the first month of World War I. The battle resulted in the almost complete destruction of the Russian Second Army and the suicide of its commanding general, Alexander Samsonov.(https://www.youtube.com/watch?v=JidDI60nBqw) -
Germans conduct air raid on Paris
The attack has little military value, but is intended to terrorize civilians.(https://www.upi.com/Archives/1940/06/03/German-bombers-hit-Paris/4413583280132/) -
Lusitania Sinks
A German submarine sinks the passenger liner Lusitania. The ship carries 1,198 people, 128 of them Americans.(https://www.britannica.com/topic/Lusitania-British-ship) -
Zimmerman Telegram
British intelligence gives Wilson the so-called Zimmermann Telegram, a message from German foreign secretary Arthur Zimmermann proposing that Mexico side with Germany in case of war between Germany and the United States. In return, Germany promises to return to Mexico the "lost provinces" of Texas and much of the rest of the American Southwest. Mexico declines the offer.(https://www.bbc.com/news/uk-38581861) -
Chateau-Thierry
The Americans attack the Germans at Chateau-Thierry. This battle would morph into the larger Battle of Belleau Wood. -
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Battle of Belleau Wood
The Battle of Belleau Wood begins as the U.S. Marine Corps attacks the Germans across an open field of wheat, suffering huge casualties.The Battle of Belleau Wood ends with the final expulsion of the Germans from the wood, which marks the farthest German advance on Paris. The area has changed hands six times during the three-week battle, which has caused nearly 10,000 American casualties.(https://warontherocks.com/2018/06/the-importance-of-the-battle-of-belleau-wood/) -
Battle of St. Mihiel
The Battle of St. Mihiel begins when 300,000 American troops under the direct command of General Pershing fling themselves into the German lines. -
Armistice Day
Armistice Day is commemorated every year on 11 November to mark the armistice signed between the Allies of World War I and Germany at Compiègne, France at 5:45 am, for the cessation of hostilities on the Western Front of World War I, which took effect at eleven o'clock in the morning.(https://en.wikipedia.org/wiki/Armistice_Day) -
Treaty of Versailles
The Treaty of Versailles (French: Traité de Versailles) was the most important of the peace treaties that brought World War I to an end. The Treaty ended the state of war between Germany and the Allied Powers.(https://www.britannica.com/event/Treaty-of-Versailles-1919)
