7.--What possible improvements of trenches are obviously called for? 8.--What special attention should be given the parapet? 9.--Give rules for drainage and sanitation. 10.--What precautions may be taken against capture of fire-trench? 11.--What does trench warfare correspond to in open warfare? 12.--What does the safety of a sector depend on? 13.--What is the fundamental duty in trench warfare? 14.--What rule determines the number of men to be posted in the fire-trench? 15.--Sum up their orders about firing before open terrain, before covered terrain. 16.--What is meant by double sentinels? 17.--Why is listening attentively even more important than keeping a sharp look out? 18.--Why should the sentinels refrain from answering the enemy's fire? 19.--What is expected of the men in the listening posts? 20.--When should the sentinels fire on a clear night? When, on a dark night? 21.--What should the sentinels do, if they hear the enemy's digging? 22.--When and where are sharpshooters posted and what is their duty? 23.--What information may patrols bring back? 24.--When should patrols be sent out and how should they be assigned? 25.--What should the sentinels along a sector know about the patrols, and the several possible patrols know about one another? 26.--Describe dress and equipment of men on patrols. 27.--Describe their method of advance. 28.--What should they do on encountering a hostile patrol? 29.--What should be the motto of men on patrol? 30.--What are some of the most useful informations about the enemy, you should try to obtain? 31.--What motto should you have about ammunition? 32.--Describe several ways of leading enemy to waste ammunition. 33.--What is the distinction between legitimate and illegitimate ruses? 34.--On what principle is the enemy's ruse of the use of blank cartridges based? 35.--How may this ruse be foiled? 36.--What should the sentinels, and what should the men on patrol do, when the enemy sends up flares? 37.--How should the enemy's machine gun fire be answered? An Enemy's Attack. 38.--Describe procedure when enemy's patrols are sighted by sentinels and when an attack develops. 39.--When are the trench mortars and the machine guns fired? 40.--How are hand grenades thrown? 41.--Where should the rifle fire be aimed? 42.--When are bayonets used? 43.--Is it sufficient to repulse an attack? 44.--What formation should be adopted for the counter attack? 45.--How is the advance made and the counter attack carried out? 46.--Describe what is meant by organization of a newly conquered trench. 47.--What should be done, if the enemy bombards the fire-trench? 48.--What should the sentinels do? 49.--What should be done if the bombardment is back of the fire-trench? 50.--What general rule applies to the use of all trench artillery? 51.--What are its ordinary objectives? 52.--How are trench mortars handled? 53.--What is meant by calling trench-artillery mobile weapons?