VikingMaekel
Chieftain
I think the Panzer will be awesome. I think its most viable counter is going to actually be "Softening up with flying units." Then you attack with your anti-tanks and your gunships.
From watching ZOC in action - if you rewatch the videos, you can see the gigantic difference in blue outlines when he's moving around Napoleon's troops - I'd say that you can stop true flanking by having a well created line of infantry - a unit may die, but the Zone of Control will halt significant offensive mobility from that point.
I think if Germany's on your border, this becomes a sensible precaution: http://en.wikipedia.org/wiki/Maginot_Line
Germany will then just use their superior Panzer speed to circumvent any ol' French defensive line.