World War I: The Great War

Where was Archduke Franz Ferdinand assassinated on June 28, 1914, sparking the start of World War I?

On what date did the armistice ending World War I take effect — a moment still honored as Veterans Day?

Which three nations formed the Triple Entente — the main Allied alliance at the outbreak of World War I?

Which nation first used poison gas on a large scale in World War I, releasing chlorine gas at the Second Battle of Ypres in April 1915?

Which German flying ace earned the nickname 'The Red Baron' and recorded 80 aerial victories — the highest total of any pilot in the war?

Approximately how many British soldiers were killed or wounded on July 1, 1916 — the opening day of the Battle of the Somme?

In what year did the United States formally enter World War I, following Germany's unrestricted submarine warfare and the Zimmermann Telegram?

The Treaty of Versailles, which formally ended World War I in 1919, was signed at which magnificent royal palace near Paris?

In which major battle were military tanks first used in combat, when Britain deployed 49 Mark I tanks on September 15, 1916?

Which American general commanded the U.S. forces in Europe — known as the American Expeditionary Forces — during World War I?

The Allied Gallipoli campaign of 1915–1916 aimed to capture which strategic strait, then controlled by the Ottoman Empire?

Which British war poet wrote 'Dulce et Decorum Est,' a searing poem describing a poison gas attack on the Western Front?

The Battle of Jutland in May 1916 was the largest naval battle of World War I. Off the coast of which country was it fought?

Field Marshal Sir Douglas Haig served as Commander-in-Chief of which force, overseeing all British and Commonwealth troops on the Western Front from 1915 to 1918?

War poet Rupert Brooke, famous for his patriotic poem 'The Soldier,' died in April 1915 before ever reaching the front lines. What caused his death?