Britain plus France plus Czech? Bad strategy - think interior lines.
No way they could have defended Czech and France both. Germany could easily have opted for either country to invade. Or feinted at one, pulled back, and invaded the other instead. Very easy for Germany to move from one front to the other compared to how hard it would have been for Britain and France.
Would France have been willing to send any troops at all, since they had their own border to defend?
