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June 28, 1914: The Assassination of Archduke Franz Ferdinand

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June 28, 1914: The Assassination of Archduke Franz Ferdinand

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The spark that ignited World War 1 was the assassination of Archduke Franz Ferdinand of Austria and his wife by a Bosnian Serb nationalist in Sarajevo. This event set off a chain reaction of alliances and mobilizations.

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July 28, 1914: Austria-Hungary Declares War on Serbia

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July 28, 1914: Austria-Hungary Declares War on Serbia

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Exactly one month after the assassination, Austria-Hungary declared war on Serbia, marking the official beginning of World War 1. This initiated a domino effect, with other nations joining the conflict due to their alliances.

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Britain declared war on Germany after the latter violated Belgium's neutrality. This drew the British Empire into the conflict, significantly expanding the theatre of war.

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The Second Battle of Ypres saw the first large-scale use of poison gas by the German army. This marked a significant and horrifying escalation in warfare technology, leading to devastating effects on soldiers.

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The German submarine U-20 sank the British ocean liner RMS Lusitania, killing 1,198 civilians, including 128 Americans. This act outraged the United States and increased tensions, contributing to their eventual entry into the war.

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July 1, 1916: Start of the Battle of the Somme

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July 1, 1916: Start of the Battle of the Somme

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The Battle of the Somme began with a massive week-long artillery bombardment followed by a large-scale infantry attack. It became one of the bloodiest battles in human history, with over one million men wounded or killed.

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April 6, 1917: United States Enters the War

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April 6, 1917: United States Enters the War

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After repeated provocations and attacks on its citizens and ships, the United States declared war on Germany. This marked a turning point in the war, significantly bolstering the Allied powers.

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After four years of relentless fighting, an armistice was signed between the Allies and Germany, effectively ending World War 1. This day is commemorated as Armistice Day or Remembrance Day in many countries.

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June 28, 1919: Treaty of Versailles Signed

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June 28, 1919: Treaty of Versailles Signed

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The Treaty of Versailles formally concluded the state of war between Germany and the Allied Powers. It imposed strict reparations on Germany, sowing the seeds for future conflicts.

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January 10, 1920: Establishment of the League of Nations

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January 10, 1920: Establishment of the League of Nations

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The League of Nations was established in an effort to prevent future wars by providing a forum for international dispute resolution. Despite its initial high hopes, it ultimately failed to prevent World War II.