I just played through a session where the Germans won on turn 6 via sudden death. Reading through the "Player's Notes" for the Soviets (to get some ideas of how to stop the gray tide) I came across this which makes me question my understanding of the rules a bit:
"Counterblow attacks" can be very effective in the first winter, where you have lots of "Shock" markers to use
It is my understanding that shock markers are only used by the attacker. Is a Soviet counterblow (e.g. a German mandatory attack on a Soviet unit due to a counterblow marker being there) considered a Soviet attack for purposes of using a shock marker even though the Germans are the ones attacking?