Your subalterns and platoon sergeants you must use as your delegates in supervising and leading the platoons to which they belong, except when they are needed to act specifically as platoon commanders, keeping themselves constantly on the move among the men, looking at the details of the work, sighting of rifles, aiming, use of cover, choice of lines of movement, not lying down themselves nor participating in the operation as combatants. When you wish to give them practice in setting exercises themselves, turn the whole company over to one of them and act yourself as critic, or act as subaltern under his orders. This is one means of supervision. The next is your non-commissioned officers. They are in direct command, and you must hold them responsible for their sections, but when their units are acting in conjunction with others, it is evident they cannot act both as commanders and instructors unless certain concessions are made, for if the non-commissioned officers as well as the men of a section were to act as they would have to do under real fire, each non-commissioned officer might be able only to supervise a man or two on his right and left, the rest being too far off. Therefore, at the beginning of an exercise, you should tell the non-commissioned officers whether, in addition to giving executive commands, they are to be at liberty to move about freely and act as instructors also. Needless to say, in instructional exercises, and until the men are quite seasoned, you should let them do this, but, on the other hand, in exercises meant to illustrate actual conflict and the limitations imposed by the presence of an enemy, they should pay attention to those limitations so that they, as well as the men, may be prepared to endure the disabilities imposed by Service conditions.