Absolutely. One of the most remarkable pieces of documentary film ever made. It goes on and on but is facinating throughout.
Of that 50 million dead were 20 million Russians and a good chunk of that 20 million were from the Russians themselves. The Russian soldier had the rather unique circumstance of having two sets of guns trained on him. The Germans in front of him and the NKVD and commissars from behind. If you had been captured by the Germans your chances of survival were very slim but if you did and you returned home to the loving arms of Uncle Joe you were shot or imprisoned anyway.