I know the region and can confirm that aside of war-cementaries and the respective road-signs all over there is hardly anything that reminds the uninitiated of what happened there before.

Chosing the perspective of a trenched soldier is one possible approach.
The way he photographed those views, they lose any reference to that place in location and time.

A lack, or a universal approach to war?

(Be aware that aside of those "landscape" views he also did more documentary work designated "tunnels".)