Popular Science Monf/i/i/

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���Soldiers in One of the Winding Trenches of a Shell-Pitted Battlefield

��Military information of the kind which this picture contains is carefully noted by the observer who engages in Corps reconnaissance. Considerable deductive power is necessary

��motor, and is off again — homeward bound.

Again the battlelines come into view below, and the observer looks out for new trenches. Sure enough he sees several,

��and marks their position carefully on the map; also whether they are traverse or communication trenches. The condition of the barbed wire entanglements next engages his attention. Where they are^

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