Bayan juyin juya halin Bolshevik a Rasha, Japan da Amurka sun aika da dakarun zuwa Siberia a 1918 don karfafa sojojin jagoran kungiyar White movement Admiral Alexander Kolchak a kan Red Army na Bolshevik. A cikin wannan Siberian Intervention, Rundunar Sojan Sama ta Japan ta fara shirin aikawa da sojoji fiye da 70,000 don mamaye Siberia har zuwa yammacin tafkin Baikal. An rage shirin sosai saboda adawa daga Amurka. Zuwa ƙarshen yakin, Japan ta cika umarni don kayan yaƙi da ake buƙata ga abokan kawancen Turai. Hawan yakin ya taimaka wajen rarraba masana'antar kasar, ya kara yawan fitar da kayayyaki, kuma Japan daga mai bashi zuwa mai ba da bashi a karon farko.
Ƙasar Amirka