Wikipedia indicates: The Russian Expeditionary Force was a World War I military force sent to France by the Russian Empire. In 1915 the French requested that Russian troops be sent to fight alongside their own army on the Western Front. Initially they asked for 300,000 men, an unrealistically high figure, probably based on assumptions about Russia's 'unlimited' reserves. General Mikhail Alekseev, the Imperial Chief of Staff, was opposed to sending any Russian troops, although Nicholas II finally agreed to send a unit of brigade strength. The First Russian Special Brigade finally landed at Marseille in April 1916. A Second Special Brigade was also sent to serve alongside other Allied formations on the Salonika Front in northern Greece. In France, the First Brigade participated in the Nivelle Offensive, however with news of the Russian Revolution of 1917 impacting on the demoralisation within the French Army following the failure of that offensive, the 1st and 3rd Brigades participated in the wave of mutinies spreading across France. The First Brigade was finally disbanded before the end of the year. However, some elements formed the Légion Russe (French for Russian Legion), and continued to maintain a Russian presence in the west and, indeed in the First World War itself, until the Armistice in November, 1918. The photos attached are from a newspaper propaganda article about the Russian Expeditionary Force.