1. He goes to the command post of the center of resistance opposite to the point in the enemy’s line against which the raid is to be made. Here he gathers all necessary information concerning the enemy by studying maps and sketches, and comparing them with the ground. He also speaks with occupants of the first line for the purpose of getting information; and calls upon the commander of the center of resistance to send special listening parties, if necessary, to the enemy’s line, observing necessary precautions to prevent the enemy from becoming suspicious of a contemplated raid. From the detailed information, maps and sketches that the leader of the raid has obtained from the headquarters of the center of resistance and from his own reconnaissance, he lays out a model of the hostile point to be attacked. This he does in the rear of his own sector. The model is partially dug in so that the raiding detachment will have an exact duplicate of the enemy’s lines to be raided to practice upon. He now prepares the order for the execution of the raid, which contains the following points: 1. =Purpose of the Raid.= To destroy such and such a dugout, machine gun emplacement, etc., to make prisoners, to gather information, or to prevent a contemplated gas attack on the part of the enemy. 2. =Troops Employed.= Number and designation of the different groups of grenadiers and trench cleaners to be used, equipment of same, and ammunition carried. 3. =Objective of the Raid.= The particular part of a trench, post, blockhouse, etc. 4. =Precise Rôle of Each Group.= Disposition of the groups before the raid in their own lines. This may be in the firing line or in “No Man’s Land” in a shell hole reached by crawling at night. Time and signal of departure. Means of crossing the enemy’s barbed wire entanglements. Points of the hostile line upon which each group is to make its attack. Rôle of each group during the raid. Protection of the flank, establishing barricades, proper execution of the raid. Time or signal to return. 5. Co-operation of the infantry and artillery supporting the raid. 6. Supply of the attacking troops—grenade depots in the firing line. In practicing the raid in the rear, on the model, the detachment must repeat the execution of the raid at least five times. All the details of the raid are foreseen and provided for. Each man is made thoroughly proficient in his particular part in the raid, so that, in the confusion and darkness, they will be able to reach their objective and carry out their particular function. Each chief of group must be thoroughly conversant with his duties. The leader of the raid personally conducts the most important of these groups. =Execution of the Raid.= The most important element of the execution of a raid is speed, its time of duration being only from five to ten minutes.