The Russian Empire's entry into World War I unfolded gradually in the days leading up to July 28, 1914. The sequence of events began with Austria-Hungary's...

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Austro-Hungarian entry into World War I British entry into World War I German entry into World War I Russian entry into World War I Ottoman entry into World War I American...

entry into World War I German entry into World War I Ottoman entry into World War I Russian entry into World War I Allies of World War I Triple Entente...

Germany entered into World War I on August 1, 1914, when it declared war on Russia. In accordance with its war plan, it ignored Russia and moved first...

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...

The Ottoman Empire's entry into World War I began when two recently purchased ships of its navy, which were still crewed by German sailors and commanded...

The original goal was opposition to Russian expansion. The alliance facilitated Japanese entry into World War I, but did not require Japan to do so....

The Eastern Front or Eastern Theater of World War I (German: Ostfront; Romanian: Frontul de răsărit; Russian: Восточный фронт, romanized: Vostochny front)...

World War I German entry into World War I Italian entry into World War I Russian entry into World War I Historiography of the causes of World War I International...