What gain in territory are you talking about? The only real European territorial grab the Soviets made was to annex a chunk of East Prussia around Konigsberg (Kaliningrad Oblast).
Most of the rest were pre-war, or at least pre-Operation Barbarossa land grabs by the Soviets.
In the East, the Soviets did annex the Kuril Islands and the southern half of Sakhalin.
Poland was set up. As the Russians advanced on Warsaw they encouraged the democratic controlled partisans to rise up against the Germans. Asking them for help in clearing Warsaw of Germans. The underground came out of the under ground and attacked the Germans. Stalin stopped the Russian army from joining the fight and held there lines still while the German army counter attacked and began to wipe them out. I have forgotten how many Poles starved because Stalin would not attack the Germans or fly supplies into Poland. After the democratic leaning underground had been wiped out and Warsaw was leveled the the Russian army reattacked. Also both the communist resistance and the capitalist resistance fought against the Nazis. And some times against each other or with each other.
A year earlier, before there was any prospect of real outside help for the ghetto uprising.
By the summer of 1944, the Russians were on Warsaw’s doorstep, and the Polish underground state and army wanted to liberate Warsaw and gain their own foothold before the Russians took over. The Red Army not only waited for the Germans to wipe out the Polish Home Army uprising, but refused to let the western Allies use Soviet air bases to support the Poles. “Set up” is not quite the word, since it’s hardly likely the anti-Communist Polish underground would have trusted the Russians’ intentions anyway.
And when it was all over, the Communist dominated government soon made sure surviving Home Army members, particularly officers, were suppressed in various ways, just as the Russians had deliberately murdered thousands of Polish Army officers falling into their hands after the Molotov-Ribbentrop pact. But there really wasn’t much the western Allies could do about it, however guilty they might feel about it.
Well Patton was all for keeping the fight going and turning the western allies armies towards Moscow. And that was before we knew we’d have the A-Bomb.
Good people died to prevent the red tide sweeping asia…
back then they had propaganda saying “fight the red tide !”.
So look at actual events …
Korean war… hey its still going on !
Vietnam war…
Malaysian Emergency - not a war but a secure the borders thing
Burma…
Afghanistan… The west wanted to help moderates… Russia didnt like having the west so close to the northern ‘stans’.
Central america… eg Norieago assisted by the west to prevent communism
Pinochet… assisted by the west… at first