The evaluation begins with an analysis of the existing and projected conditions of the battlefield environment and their effects on friendly and threat operations. During the evaluation, areas that favor each type of operation being considered are evaluated. Identify characteristics of the battlefield which will influence friendly and threat operations. Observation is the influence of terrain on reconnaissance, surveillance, and target acquisition capabilities. FOF is the effect of terrain on weapons effectiveness.
Concealment is protection from air and ground observation.
Cover is protection from the effects of fire. Both are vital for protection from hostile fire. Obstacles are natural and manmade terrain features that stop, impede or divert military movement. Key terrain is any feature or area the seizure or control of which offers a marked tactical advantage. AAs are routes by which a force may reach key terrain or an objective.