They could've chosen a more fitting winter uniform, but the winter uniforms of the grenadiers are actually realistic. Well, except that the colours are wrong.
There is no way in hell those winter uniforms are realistic.
Take a look at any of these pictures and tell me again why the Germans straight up wore the most distinguishable color in a WINTER ENVIRONMENT.
Unlike these, the Grens in COH2 seems to have left their winter uniforms back in vCOH. So please tell me again, in what way the COH2 Ostheer Gren uniforms were historic?