Ottoman entry into World War I.

The Ottoman Empire's entry into World War I began on 29 October 1914 when two recently purchased ships of its navy, which were still crewed by German sailors and commanded by their German admiral, carried out the Black Sea Raid, a surprise attack against Russian ports. Russia replied by declaring war on 1 November 1914. Russia's allies, Britain and France, declared war on the Ottoman Empire on 5 November 1914. The reasons for the Ottoman action were not immediately clear. The Ottoman government had declared neutrality in the war and negotiations with both sides were underway.

October 29 is the 302nd day of the year in the Gregorian calendar; 63 days remain until the end of the year.