What is the military power's name formed by the new government of the soviet Union and fought in the the Soviet-Japanese border conflicts among the Soviet Union, mongolia, japan and Manchukuo  in 1939?
Military history of the Soviet Union:  In 1918 the new government formed the Red Army, which then defeated its various internal enemies in the Russian Civil War of 1917–22. Battles of Khalkhin Gol: The Battles of Khalkhyn Gol were the decisive engagements of the undeclared Soviet–Japanese border conflicts fought among the Soviet Union, Mongolia, Japan and Manchukuo in 1939.
Red Army