Another plan is to let the men, whenever possible, instruct the class. Announce that any man may be called upon to take charge, and the uncertainty will keep everyone studying. This plan will also give the men valuable practice in teaching others. Their periods of instruction, of course, must be limited, and unsatisfactory parts of their work reviewed before the conference is dismissed. Another way to stimulate study is to have a short discussion, talk or quiz just before the close of the study hour, when the men, if left to themselves, will incline to look at their watches more often than at their books. A brief explanation of the work assigned, with emphasis upon a few especially important points, makes good use of this closing time, especially when the men are required to write down the points emphasized. Syllabus: Small Problems for Infantry. (References, f.s.r., p. 26-30, 33-39.) First Problem: Advance Guard and Point: A. Definition and Function.--Small patrol sent ahead from advance party for disclosing enemy's position and strength, in time for larger bodies to make suitable defensive and offensive dispositions. Function primarily warning; but to give specific information, it may have to fight and thus feel enemy out. B. Principles: 1. Formed zig-zag; distance from advance party =? 2. Controlled by leader of advance party. 3. Speed must be great enough not to impede the main column. Must not halt at first sign of enemy, nor go off on a flank. 4. Interest and co-operation of inferiors, by adequate explanation of situation and of individual duties ("repeats"). 5. Rules for estimating numerical strength of the moving body of troops (cf., f.s.r., sec. 27). 6. Point as a "march outpost" (=?) when the column is halted. Only then may the A.G. point make any lateral arrangement of its members (cf. 3 above). Second Problem: Advance Guard Connecting File, cf., f.s.r., reference above: A. Definition and Function.--Two men (usually) for liaison en route where elements too widely separated or roads too curved and wooded. Distance 200 to 5 yards apart. B. Principles: 1. Constant touch with elements before and behind. 2. Relay both ways messages sent to or from remoter parts of the column. Speed and accuracy of signaling. 3. Guide to be forward in daytime, at night on the main body. Third Problem: Advance Guard Flank Patrol, pp. 31-32: A. Definition and Function.--For protecting a marching column from attack, by warning it on the basis of information gained in reconnaissance. Interval between men depends on circumstances. B. Principles: