The Red Army participated in the Battle of Berlin as an invasion force.
The Red Army also fought against national independence movements in the territory of the former Russian Empire, including three military campaigns against the army of the Ukrainian People's Republic, in JanuaryFebruary 1918, JanuaryFebruary 1919, and MayOctober 1920
  A generation of Soviet commanders (notably Georgy Zhukov) learned from the defeats,  and Soviet victories in the Battle of Moscow, at Stalingrad, Kursk and later in Operation Bagration proved decisive

