Several things jump out here and a little research goes a long way.
First the trees have all this greenery under the snow but have the shape of a deciduous tree. The Ardennes offensive wa in late December. The only foliage left on trees at that time are browned out oak leaves.
Secondly, you have a guy about to fire a Panzerfaust, the range of which is 30 meters, under a hundred feet. No one seems to be takkng any cover, including the officer in the Nashorn, who looks pretty darn casual.
Further, the backblast will cook the two guys on the berm.