THIRD: INSTRUCTION IN GRENADE ORGANIZATION.--Men should be given a certain amount of theoretical instruction as to the composition of the armies now on the western front; this in order that they may see the part that grenadiers and bombers are playing in the struggle. They should be shown the organization of the British Infantry and how the first section of each platoon is composed exclusively of bombers and--rifle grenadiers; they should also be taught how the bombers and grenadiers are concentrated in the French organization. The typical bombing squad consists of 7 or 8 men and a leader who take positions as follows: 1 and 2, bayonet men; 3, first thrower; 4, first carrier; 5, leader; 6, rifle bomber; 7, second thrower; 8, second carrier; 9, rifle bomber. One of these bayonet men may be reserved to act as a sniper. The leader acts as an observer and directs the work of the bombers. The rifle bombers outrange the hostile bombers and also afford protection on the flanks. Every man must be taught his job and must be thoroughly instructed in the work of the squad as a whole in order that each man may be able to fill any position and that there may be perfect teamwork. [Illustration: Plate #8] POINTS TO REMEMBER. 1. Men should always have a definite target for their throwing--an outline of a trench is usually to be preferred. 2. Caution in handling grenades should be made a habit. 3. Accuracy is essential. 4. Training should be progressive, both for men and organizations. 5. Keep up competition among the men; rivalry will increase practice and men will throw grenades for recreation. This will get results. Let two men throw at each other. A good shot will make the other man move. 6. Insist upon the straight overhead throw. It is less tiresome and when developed properly will give equal accuracy with any other method. 7. Teamwork in a bombing squad is essential. 8. Under new methods of warfare every infantryman is a bomber; but specialists must be trained. 9. Officer must be a real leader and the best fighter in his platoon. 10. Qualification tests should be arranged and the better qualified men taken for special training in this art. CHAPTER 5. Map Sketching. Map sketching is an important factor in trench warfare to-day as it is in a war of movement. A fairly accurate map will indicate more than many words and in much less time. Time is the great factor in war. Instruction must also be rapid. Here are ten lessons which would occupy a week if taken morning and afternoon. The aim of the instruction as in company rifle shooting is to train many men to do a satisfactory job, not to make a few finished topographers. Neatness, accuracy and initiative are cardinal points. For the instructor, reference should be made to _Grieves'_ "_Military Sketching and Map Reading_", 2nd edition, if he desires to supplement any points given here. LESSON 1. (CLASS ROOM--FOUR HOURS.) _Problem--Map Reading._