Russians lost 27 mln. people ( civilien + military).But,real military caulelties are not 8.6 mln. soldiers .Real causelties - aprox. 15-16 mln. & civilien - 8-10 mln.
German lost 4 mln soldiers , of which 3.5 mln on East front.
USA lost 415,000 soldiers of which 290.000 (!?) in battle .And how about the rest 125.000 ?

the rest being non combat loses due to sickness and accidents .