Thanks for the sympathy. I've now played this three times. Here's a strategy that has some chance, IF you are lucky.
IMMEDIATELY upon scenario start race all your tanks at full speed up the right side of the map, carrying the infantry.
Cover your advance with smoke.
Some tanks will bog down; if they carry infantry have the dismounted troops go as fast as they can into the woods on the right and then hide them.
If you can get six or eight Shermans off to the right, and across the road, you can destroy lots of German infantry. Make sure your tanks don't appear in the open on the hills or lurking german tanks will take them out at long range.
Once you get your infantry organized, you can advance from the right.
I got a draw this way; I managed to secure the right and center of the map, but couldn't advance across the center line because of German armor.
In the course of the battle I managed to destroy a few of the less-important German armor units but basically hid from the Panthers.
The main luck comes like this: in the dash across the open field, it's quite possible that half of your shermans will be immobilized in the wet terrain. If that happens, forget it.