turtling "always works" (hell, it even works playing the Netherlands 
) - provided you plan it so that your forts are done (lvl 10) by the time the panzers come knocking.
A second strategy that usually works for me is CAS; just have a couple of stacks, let the Germans "try" to advance.. prevent them from digging in too much and those panzers are scrap. It'll take some time to kill enough units to be able to take the offensive- but it'll work eventually.
) - provided you plan it so that your forts are done (lvl 10) by the time the panzers come knocking.A second strategy that usually works for me is CAS; just have a couple of stacks, let the Germans "try" to advance.. prevent them from digging in too much and those panzers are scrap. It'll take some time to kill enough units to be able to take the offensive- but it'll work eventually.