Maj.Striker said:
However, when you consider it took 3 strong superpowers (namely: Russia, England and America) along with several allies (remnants of Polish, French and Czech troops and aviators) to bring Germany down, I don't think Poland, even with French and English support would have instantly stopped Germany.
Well, see, that's the thing - hindsight, as a matter of fact, is almost never 20/20. This is an example of that. The Wehrmacht is a legendary force, and its legend is hard-earned and well-deserved... but the Wehrmacht of legend is the Wehrmacht of 1941, not of 1939. Remember, Germany spent those two years most profitably - it imported vast quantities of resources from the Soviet Union, it secured the support (both material and military) of Romania, Bulgaria and Hungary, it made good use of Czech military factories (Bohemia had once been the industrial heart of Austro-Hungary!) and it developed incredibly effective equipment for its forces.
The Wehrmacht was not, however, a force that miraculously appeared in all its glory when Hitler waved his magic wand.
In 1936, it was a joke - Poland had technological superiority (and possibly numeric as well, but I don't know offhand the Wehrmacht's size circa 1936).
In 1938, it was still a joke - to this day, the debate still rages on whether Czechoslovakia could have fended off Hitler by itself, given that its border with Germany had fortifications as good as France's legendary Maginot line, and that it had better tanks. That bears repeating -
Czechoslovakia had better tanks. The Germans later used Czech tanks, before developing better tanks of their own. Czechoslovakia gave in not because they were doomed by default, but because they were completely isolated in the west (and because their own arrogant foreign policies had left them isolated in the east). It's a little difficult to remain confident in your victory when your supposed allies act as if they're too scared to help you.
And finally, in 1939, it was a force to be reckoned with, with excellent commanders, but it had no endurance. I wasn't kidding when I said earlier that German forces were experiencing shortages of fuel and ammo by the time the Polish campaign was finished - Germany really did lack the resources and logistical support to conduct an extended campaign, and four weeks was already pushing the envelope. Had the Soviets not intervened, there would have been a stalemate... and a stalemate, in the situation where Poland's able to get fresh supplies through Romania and Hungary while Germany is isolated and completely sealed off can only mean one thing: Polish victory. And the Soviets would not have intervened, had Britain and France demonstrated their intent to actually help their ally.