Editing Red Army (section)

===Polish–Soviet War and prelude===
[[File:Polish-soviet propaganda poster 1920.jpg|thumb|left|Anti-Polish Soviet propaganda poster, 1920]]
The [[Soviet westward offensive of 1918–1919]] occurred at the same time as the general Soviet move into the areas abandoned by the [[Ober Ost]] garrisons that were being withdrawn to Germany in the [[aftermath of World War I]]. This merged into the 1919–1921 [[Polish–Soviet War]], in which the Red Army invaded Poland, reaching the central part of the country in 1920, but then suffered a resounding [[Battle of Warsaw (1920)|defeat in Warsaw]], which put an end to the war. During the Polish Campaign the Red Army numbered some 6.5 million men, many of whom the Army had difficulty supporting, around 581,000 in the two operational fronts, western and southwestern. Around 2.5 million men and women were mobilized in the interior as part of reserve armies.{{Sfn | Erickson | 1962 | p = 101}}