I suggest you look at a terrain map of Verdun from that time and then say that with a straight face.
Also I suggest looking closely at German Casulities by region and you'll find that the German Casulities reports that they printed came from all fronts. End result, the Allies thought they were doing better than they were.
The reality was different, Germany was wining the war of Attrition.
Also I suggest actually reading the Sources provide by Mosier.
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