The moment you survive through a Sniper blitz wave with no Snipers or Scouts of your own to detect them cloaked, and no Signaler or Explosives to kill them with AoE damage, without any casualties is the moment you've won the game.
Im sure there are several players who dont know what the center line is in this game. When you pause the game, there is an invisible line through the middle of the words "Battle Paused" and have at least 5 units on the German's side of that line, all Bombs (Excluding V2's), Plane Rounds, and Artillery shells (Including the ones from WESPE's) will land on the German's side. You can also place a Bunker right on the edge of that line to protect troops near there, but cannot be destroyed by any arillery or bombs that land on the germans.
I've been playing this game since it first came out, and never have I seen something as awesome as a blitz level with 5 German Mobile Artillery Guns sitting back and kill 200 of their own troops while I sit there and get awards for it.