wtftookrick?

Hi y'all, got a few questions on game play. First, does anyone know how to use rifle grenades? Also, does anyone know if infantry can kill tanks by storming them? Can you collect ammo from dead people? what do the three different numbers under a Sherman's ammo stand for? Is there a way to watch the movie of the whole battle at the end? how is the withdraw command different from run? and finally: once you split a unit, can you recombine it ever? thanks, Rick