The most effective method of preventing a mixing of organizations in action is for all units constantly to endeavor to close in toward their leaders, filling gaps as soon as casualties have occurred. Squads which have sustained heavy losses unite with adjoining ones under a common leader. This closing in can, as a rule, be executed only while in motion. It must be effected gradually and the intervals ordered should be maintained. Crowding of every description increases losses and causes dangerous gaps along the entire front. If in the course of an engagement, the purpose of the action and the situation make it no longer desirable to retain an extended order formation, each leader, from the squad leader upward, must assemble his unit at once and place himself and it at the disposal of the commander of the next higher unit. Formed bodies must be created quickly and held well in hand by their leaders, without awaiting specific orders to that effect. The troops must be assembled very quietly and always facing the enemy. The original organizations are not re-formed until the command “Fall in” is given. (Pars. 214 and 232 German I. D. R.). 10. SUPPORTS. (Pars. 222-228 and 341 German I. D. R.). The limited front assigned to an organization necessitates, in the first place, a division into firing line and retained fractions. At the decisive stage of a fight every available man must, without question, be in the first line. Italy. Supports are not to be used when they cannot be maintained at a less distance from the firing line than that separating the latter from the enemy.