of Siam, now known as Thailand, is one of the lesser known participants in World War I. Siam contributed to the fight against the Central Powers in one...

100 during the brief Franco-Thai War. Thailand, formerly known as Siam, was at the time one of few independent countries in Asia. However, the country...

World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies...

During World War I (1914–1918), belligerents from both the Allied Powers and Central Powers violated international criminal law, committing numerous war crimes...

years, but the first large-scale use of chemical weapons was during World War I. They were primarily used to demoralize, injure, and kill entrenched...

The United States entered into World War I in April 1917, more than two and a half years after the war began in Europe. Apart from an Anglophile element...

This list of military engagements of World War I covers terrestrial, maritime, and aerial conflicts, including campaigns, operations, defensive positions...

the technology of warfare in general. This trend began at least fifty years prior to World War I during the American Civil War of 1861–1865, and continued...

The United States declared war on the German Empire on April 6, 1917, nearly three years after World War I started. A ceasefire and armistice were declared...

Front or Eastern Theater of World War I (German: Ostfront; Romanian: Frontul de răsărit;), for Russia Second Patriotic War (Russian: Вторая Отечественная...