Totally disagree, The "supply line" was a fact of life during WWII or any war or military operation of any size. You could have eliminated the problem fist with a preliminary strike on supporting fields supply systems, killing barracks, stops the resupply, killing the VH stops the reinforcements. A well planned mission would have thought of that and by doing so, ensured that their only defense would be to up to meet the enemy. But you would rather whine about it here because you were to lazy to assign a few assets to hit and kill the supply line.