Complex sentence: There is no trace of snow at all in the film's major tank battle scene, nor were some battle scenes fought in flat and bare territory, considering the mountainous, and forested and grassy nature of the Ardennes.
Split into simpler sentences: There is no trace of snow at all in the film's major tank battle scene. Nor were some battle scenes fought in flat and bare territory, considering the mountainous, and forested and grassy nature of the Ardennes.