An aerial photograph has the following
advantages over a map:
(1) It provides a current pictorial view of the ground that no map can equal.
(2) It is more readily obtained. The photograph may be in the hands of the user within a few hours after it is taken; a map may take months to prepare.
(3) It may be made for places that are inaccessible to ground soldiers.
(4) It shows military features that do not appear on maps.
(5) It can provide a day-to-day comparison of selected areas, permitting evaluations to be made of enemy activity.
(6) It provides a permanent and objective record of the day-to-day changes with the area.