"Map reading and the training of the intelligence section, i.e., scouts, snipers, and observers are a group of subjects which every officer should personally take an interest in. Not only because they are, as subjects, most interesting, but...
"The purpose of this 1941 manual is to present in simplified form necessary information for instruction of all military personnel in elementary map and aerial photograph reading."
"This 1941 manual sets forth the nature, types, and purposes of aerial photography with its application to military requirements. The Air Corps functions with respect to aerial photography and the factors affecting the execution of these function...