T-34's in Combat Mission

[ATCS]

Zemke mentioned T-70's....I almost NEVER use Soviet light tanks. I have had nothing but bad experiences with them, admittedly due to poor usage (most likely). They could be used as distractions while you manuever your T-34's, but that seems like an expensive ruse. I know the whole "move from cover to cover" theory, but in practice I have never made it work. Any real life (game-wise) experiences to get those little guys to survive?