JF Ptak Science Books Quick Post
This is a striking image of a bright and reaching idea--the use of dogs to find, identify, and alert the presence of a wounded soldier on the battlefield. The dog would be sent out onto the battlefield, where it would find wounded soldiers, after which the dog would retrieve a possession of the soldier's and return to the trenches, and then lead a squad to retrieve the wounded man. That, or the dog would stay and stand guard, barking to alert stretcher bearers the location of the soldier. The dog houses are of a massive construction, like fortified dugouts--I suspect that the camp was far enough front to be subject to bombardment. I'm not sure of the breeds there, but perhaps these are Bouvier des Flandres, or Briard? I can't tell.
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[Popular Mechanics, May, 1917, pg. 682.]