What POD after 1940 would lead to the Western Allies liberating Poland?
Presumably, something increasing the success of the Barbarossa invasion would need to be part of it. After all, the Soviets have a significant geographical advantage here. Maybe an earlier and bigger buildup of the US Army (perhaps via social changes leading to increased militaristic or interventionist feelings in the US), particularly if they can swing the early 200 division plan, would help a lot. Along with that, avoiding at least the more notoriously bad commanders would be good.
EDIT: Okay, I broke my own rule there at the end. Let us say no geopolitical PODs prior to 1940 (ie., the Battle of France still goes as OTL), but you can propose non-geopolitical PODs (eg., increased influence of the Poles on the Western Allies) which predate that.
Presumably, something increasing the success of the Barbarossa invasion would need to be part of it. After all, the Soviets have a significant geographical advantage here. Maybe an earlier and bigger buildup of the US Army (perhaps via social changes leading to increased militaristic or interventionist feelings in the US), particularly if they can swing the early 200 division plan, would help a lot. Along with that, avoiding at least the more notoriously bad commanders would be good.
EDIT: Okay, I broke my own rule there at the end. Let us say no geopolitical PODs prior to 1940 (ie., the Battle of France still goes as OTL), but you can propose non-geopolitical PODs (eg., increased influence of the Poles on the Western Allies) which predate that.