First Coalition War Against the Soviet Union (Allied Defeat)

The First Coalition War against the Soviet Union was fought by a coalition of 9 nations against the Union of Soviet Socialist Republics and its allies in late 1937. Major conflicts were mostly saw in Eastern Europe and Asia. The war ended in a communist victory in November, 1937. The Peace of Leningrad was signed between the factions, which Japan, China and Romania become subjects of the Soviet Union.

Japan's independence guaranteed
After the Dutch Expansion, Japanese mainlands were threatened by the superpowers in Asia – The Soviet Union and the Dutch Empire. The British Empire and the French Republic guaranteed Japan's independence and attempted to make peace in Asia in the next years.

Soviet ultimatum to Japan
In early August, Stalin officially sends an ultimatum to the Empire of Japan. Japan accepts all contents of the ultimatum excluding one – to become a satellite of the Soviet Union and abandon the monarchy. The USSR declared war on Japan not long after Japan refused the ultimatum.

Formation of the Coalition
Britain and France joined Japan after the Soviet declaration of war. With the rising communist threat in Europe, eastern European powers including Germany, Italy, Czechoslovakia, Poland and Romania joined Japan as well and the coalition was built.

China joins the Coalition
With the nationalist-communist civil war ongoing, China joined the Coalition to crush the Chinese Communist Party and attempted to reclaim Soviet Manchuria for one goal – unifying China.

Coalition Manchuria Offensive
The Coalition launched a large-scale military operation to take Manchuria in late August, the offensive lasted 2 months and ended in a Soviet victory. The failed offensive crippled Chinese forces and other Coalition forces in China. An evacuation was carried out in mid-October to send the Coalition forces from Hong Kong to India. The Soviet Union soon invaded central China and Tibet to invade British Raj later.

Soviet Invasion of Japanese mainland
After the victory in Manchuria, Soviet forces in the Far East launch a devastating naval invasion of Northern, Western and Southern Japanese mainland. The Soviets used captured warships from the Imperial Japanese Navy to strike back the mighty British Royal Navy. Tokyo was surrounded in late November and the invasion ended.

War in Romania
The Soviet Union was often attacked by European Coalition powers on the Polish and Romanian-Soviet borders. In September, the war in Europe finally broke out, with Red Army forces punched through the Romanian borders in installed a Communist government in Romania, which later became a satellite state of the Soviet Union.

Coalition peace with the USSR
In late November, lots of Coalition lands were occupied by Soviet armed forces. Japan, China and Romania were ran through by the Russians, led to the Coalition suing for peace on November 21, 1937, ending the First Coalition War against the Soviet Union.

Aftermath

 * Hirohito exiled to October Revolution Island.
 * Major powers of East Asia turn communist under Soviet control.
 * Cession of Eastern Poland by the USSR.