Popular Science Monf/i/i/ 



;)09 



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^ 



