The purpose of this manual is to provide a text on map and aerial photograph reading for training of military personnel already familiar with basic elements covered by FM 21-25 or who require more detailed instructions than is furnished by FM 21-25.SECTION I. General ———— 1-9 1II. Distance ——— 10-15 10IH. Direction, orientation, and location ——— 16-28 20IV. Coordinates ————— 29-38 41V. Elevation and relief———————39-48 61VI. Slope, profile, and visibility_____ 49-60 73VH. Aerial photographs_________ 61-75 87Vin. Identification of terrain features on single photograph————— 76-88 113IX. Stereovision and examination______ 89-93 129X. Preparation of aerial photographs for useas map substitute_________ 94-114 148XI. Photomaps ___________________ 115-120 175INDEX ——— 183