Danger zone ---- Danger zone --- --- Cavalry -- __ -- Cavalry -- -- -- -- / -- -- \ / / ___ \ \ + / ---- ---- \ + ^ + / \ + / ^ + +-----------+ + / \ | MAIN BODY | ^ / \ +-----------+ \ Line of observation. \ Line of reserves - Occupied by small \ to move forward to groups. Drive back \ help line of supports. enemy patrols. \ Line of supports on line of resistance. Rallying point for small groups in front. Note that distances from the line of observation to the main body increase as the groups increase in size. The reserves are the largest groups. The groups on the Line of observation are the smallest. It is most important to note that the groups are placed according to the conditions and circumstances of the particular case. Don't follow any blind rules. Your judgment must tell you when to place this group here and not to place that group there. Have as few men on such duty as practicable. If a swamp, or a large body of water here, very small groups will afford the necessary security. If a forest, or steep hills here, very small parties will afford the necessary security. Assume that we want to afford security for our main body from any especially dangerous sector such as ABC. Our cavalry is in front of our first line and in touch with the enemy. The danger zone represents the direction from which the enemy is expected.] This plan must be modified according to the particular case. Let us suppose that we are camping by a large body of water, or that we are surrounded by mountains. We can easily imagine where we could change the above general plan so as to give adequate protection and at the same time lessen the number of men detailed for security. We must never forget that men are generally tired when they arrive in camp, and that we should make their work as light as circumstances permit. It requires a nice judgment to choose the correct number for security.