More Czech involvement

It has been mentioned earlier about how the war may have turned out differently if England and France had been more proactive in defending Czechoslovakia's sovereignty. Well, judging from the tenacious Czech resistance movement that participated all throughout the war, counting among its achievements the assassination of Reinhard Heidrich, I think that this nation would have made good its investing in by England and France. I must surmise that they simply couldn't face the prospect of another continent war, especially since good old Hitler promised to not take any other territories should he be given Czechoslovakia. But had they even just left Czechoslovakia to its fate, no doubt the small but modern Czech army would have been able to fight a hard fight against Germany's still-developing military. The geography of Czechoslovakia was very conducive to a defensive war, and with the Czech arms works of Svoda (or whatever) the little nation could have given the fledgling Wermacht a run for its money. For instance, in the mountains, the Wermacht wouldn't put into practice its lightening war concepts, and though Czechoslovakia would have most likely fallen, it may have taken a few of the surprises out of Germany's invasion of France and the Low Countries, and possibly caused the Germans themselves to doubt their new and untested doctrine.