What is a primary consideration impacting a patrol's formation?

The primary consideration impacting a patrol's formation is the probability of contact with the enemy. This aspect is crucial because the formation chosen for the patrol must provide the best advantage in the event of an encounter with enemy forces. A higher probability of contact necessitates a more tactical and defensive formation that allows for greater weapon coverage and situational awareness.

For instance, if contact is anticipated, formations that maximize the firepower and provide better protection for the squad can be employed, such as a line or V-shaped formation. On the other hand, if enemy contact is less likely, a more dispersed or flexible formation might be appropriate to enhance movement and speed.

While the number of personnel, time of day, and terrain type all play significant roles in operational planning, they serve more as factors that influence the specifics of the formation rather than the primary consideration. The chance of encountering the enemy directly shapes how a patrol must position itself to respond effectively to threats, making it the most critical element when deciding on the formation.