Explore the important World War I battles and agreements. Examine the details of important battles like the Battle of the Somme and the Battle of Verdun in history. Learn about the important treaties that influenced the postwar period, such as the Treaty of Versailles. Learn more about this historical time of transformation and how it affected world events.
| Battle/Treaty | Year | Description | |||
| Battle of the Marne | 1914 | Allied victory halting German advance | |||
| Battle of Tannenberg | 1914 | German victory on Eastern Front | |||
| Battle of Gallipoli | 1915 | Failed Allied campaign in Ottoman Empire | |||
| Battle of Verdun | 1916 | Longest and bloodiest battle | |||
| Battle of the Somme | 1916 | High casualties, no strategic gains | |||
| Battle of Jutland | 1916 | Largest naval battle | |||
| Battle of Passchendaele | 1917 | High casualties, minimal gains | |||
| Battle of Caporetto | 1917 | Major Central Powers victory | |||
| Spring Offensive (Ludendorff’s Offensive) | 1918 | German attempt to win the war | |||
| Second Battle of the Marne | 1918 | Allied victory, turning point | |||
| Battle of Amiens | 1918 | Allied breakthrough, Hundred Days Offensive | |||
| Battle of Megiddo | 1918 | Allied victory in Middle East | |||
| Treaty of Brest-Litovsk | 1918 | Peace treaty between Russia and Central Powers | |||
| Treaty of Versailles | 1919 | Peace treaty that ended the war | |||
| Treaty of Saint-Germain-en-Laye | 1919 | Treaty with Austria | |||
| Treaty of Neuilly-sur-Seine | 1919 | Treaty with Bulgaria | |||
| Treaty of Trianon | 1920 | Treaty with Hungary | |||
| Treaty of Sèvres | 1920 | Treaty with Ottoman Empire | |||
| Treaty of Lausanne | 1923 | Peace treaty with Turkey | |||
| Treaty of Riga | 1921 | Peace treaty with Soviet Russia and Baltic States | |||
| Treaty of Rapallo | 1922 | Treaty between Germany and Soviet Russia | |||
| Treaty of London | 1915 | Secret treaty between Allies and Italy | |||
| Treaty of Bucharest | 1918 | Peace treaty with Romania | |||
| Treaty of Portsmouth | 1905 | Peace treaty between Russia and Japan | |||
| Treaty of Sèvres | 1920 | Peace treaty with Ottoman Empire |
