Thanks Andy.
I did some playtesting last night, currently my marines are getting mobbed by the Polish hordes

, so I'll have to think hard about switching to your 2 grunt Coys.
I was planning on getting a T-34 platoon for my armored cars later. I figure I need something with some speed and firepower for scouting, turning flanks, and generally creating mayhem

.
The armored FOO was an attempt to keep everyone on the same level of mobility, but if I'm going to have the extra leg coy, I'm slowing down enough for the foot FOO to keep up.
I'll keep the 122's, though. So far, I've had a lot of luck in my European games with dropping wooden bridges in the enemy's way and picking them off as they try to ford later.
Thanks,
Matt