8. Are my sentries in the right places? Are they properly posted by N. C. O.’s and have they received proper instructions? Are the sentries visited at frequent intervals? 9. Have I always got a man ready to take messages to company headquarters? Do I realize that I should at once report any information I may obtain about the enemy, and that such information may be of the greatest use to the highest commanders? 10. Do all my men know their duties in case of attack, especially the bombers? If the enemy succeeds in working into my line at any point, how can I best arrange for counter-attacking him? 11. Are there any suitable places in my part of the line which snipers can use? Have I pointed out to section commanders the portions of the enemy’s trench which each one is responsible for keeping under fire, and where the enemy’s loopholes are? 12. Do I thoroughly understand the best method of relief and bringing up of ration and water supplies, and do my men come up into the trenches in absolute silence? 13. Do my men know their way about the trenches in various routes to company and battalion headquarters? 14. Am I acquainted with the arrangements for access to the artillery and for asking, if necessary, for their immediate support? Do I know the location of the nearest telephone? 15. Am I doing my best to collect information about the enemy, his defenses, his activities and movements, and especially about his patrols at night? What points in my front particularly require patrolling? 16. Are my listening patrols properly detailed? 17. Which is my best way to get through the parapet in order to go towards the enemy? 18. Do I know the last order regarding the use of S. O. S., gas and Zeppelin messages, and do I know exactly what messages to send? 19. Are the arrangements in case of gas attack complete and known to all ranks? Do I know the gong position, and does the sentry know the orders as to sounding it? 20. Have my men always got their gas helmets on their person and are they in good order? 21. Are my parapets and traverses bullet-proof everywhere? 22. Is my wire strong enough and am I doing all I can to prevent my trenches from falling in? 23. Am I doing all I can to drain my trenches? 24. Have my men got weather-proof places to sleep in? 25. Are the trenches as clean and sanitary as they might be? Are live ammunition and empty shells properly collected? Have I made all possible arrangements for the collection of refuse and do the men realize that it must not be thrown over the parapets or in the sump-pits for sanitary reasons? 26. Where are my small ammunition and bomb stores, and are they under cover from weather? 27. Are all my rifles and ammunition clean and in good order, and have all my men rifle covers? Are their magazines always charged?