Persian Campaign

The Persian Campaign or Invasion of Persia also known as Invasion of Iran was a series of engagements at northern Persian Azerbaijan and western Persia between the British Empire, Russian Empire and Armenian and Assyrian forces against the Ottoman Empire, beginning in December 1914 and ending with the Armistice of Mudros on October 30, 1918 as part of Middle Eastern theatre of World War I. The Russian operations were halted by the Russian Revolution on February 23, 1917 when the Russian Caucasus Army was replaced with Armenian units and an Allied force named Dunsterforce.