"That lot" being the Nazis shooting at them from the west or the Sovs shooting at them from the east? I recall reading once that of the cohort of Russian males aged between 14 and 20 on the day Germany invaded, just 3% remained alive on the day Germany surrendered. Something like 90% of German casualties in WWII were inflicted by the Red Army.
I saw the film; enjoyed it well enough. A couple of Russian teenagers of my acquaintance (raised on tales from a grandfather who drove a tank during the war) regard it with contempt, however, as Hollywood claptrap.
cordially,