The Australian War Museum (AWM) dates back to the period between WW I and WW II. Obviously back then they didn't have interactive multimedia extravaganzas and 3D Imax presentations to show what life was like in the field. (Or Call Of Duty videogames to show what it's not.)

One way that the curators attempted to convey this was by the extensive use of model dioramas. There are entire halls of dioramas portraying elements of the various WW I theatres of operation, though this mode of presentation wasn't utilised as much after WW II. Nonetheless there's an astounding level of detail in the existing dioramas.

Here we see a sergeant sitting in the mud and barbed wire (under his feet) of the Western Front. Rather than a heroic, rock jawed portrayal, the modellers allowed the reality of the life to be seen; a life where exhaustion and discomfort, and simply having had enough, were the norm.
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Edit August 2024: I don't recall which of the many dioramas this one was from. It has been 6 years since I was last in Canberra; the next time I return I really need to spend a day going back and really updating my shots which were obtained in a fragmentary fashion over several years.