After reading http://www.boardgamegeek.com/thread/698918/counterattacking-... and the FAQ on te VP edition I learned that it is possible to attack (or counterattack) multiple hexes with only one unit. The defender chooses the benefit of the terrain in his defense and the attacker chooses the benefits of the terrain in case the defender has to retreat.
Suppose a German armor type unit (counter)attacks two Russian infantry type units, one of them in woods, the other in clear terrain. At the moment of the attack the Russian player can chooses to use the defensive benefit of the wooded terrain while the German player (in case of a DR result) can choose for the clear terrain benefit to advance after combat. Am I correct?