They are all excellent! I highly recommend White Tiger, Come and See, They Fought for their Country. Those are probably my favourites. Liberation is great too. It's sort of like a docu-drama starting from Kursk and finishing at Berlin. Battle for Moscow is its sequel from same director following the beginning of Barbarossa to Moscow.

I don't see them in the list, so I'll suggest you also look for: Father of a Soldier, The Brest Fortress, Panfilov's 28, T-34, The Ascent, The Battle of Stalingrad (1949), Only Old Men are Going to Battle, The Dawns here are Quiet.