Taking Poland in two turns is possible, but some luck is necessary so it cant be counted on. It is next to impossible for Germany to win (IMHO) if allies use all british troops to reinforce france. So that should be taken into account for and "grand" strategy!

I play with my friend via TCP/IP and am Germany. Poland goes fine, as does Holland. Then the problems start. He transports all land units from Britain, to the continent and guards all ports w/ btlshps (preventing a sea lion invasion of britain). By the time I am hitting france he has all french unit...