2. The march from billets to the trenches: (a) Transportation, by auto-trucks and wagons, is utilized to a point as near the lines as possible, to carry the packs of the men, the auto rifles, extra ammunition and other heavy equipment. When the distance is great the men themselves should be carried by auto-truck; this saves time and fatigue. The men will carry rifles loaded and locked, full cartridge belts, gas masks, and all other lighter equipment, with rations for 24 hours at least. Grenades will be secured in the trenches. Electric torches will be carried by company and platoon commanders. (b) The strictest discipline must be maintained. On arrival within sight of the enemy, noise and smoking (or other lights) will be prohibited. (c) Guides, from the company to be relieved, will meet the relieving company promptly at a point definitely agreed upon in advance. 3. The march through the boyaux (communicating trenches): (a) Distance; often as much three or four miles. (b) Order of march: company in single file, captain at the head; each platoon leader at the head of his platoon; a non-commissioned officer at rear of each platoon. (c) The column must be kept closed up. Each man must consider himself a connecting file, guiding on the head, and behave accordingly. A guide should accompany the commander of the last platoon. (d) Rate of march: roughly, about 40 yards per minute. It takes 250 men about 20 minutes to pass a given point. (e) Route and right of way: The first line and support trenches will never be used as roads. Separate boyaux should, if possible, be assigned to the troops relieving and relieved. In no case will one company cross the path of another. In case of two columns meeting, one moving forward, the other to the rear, the former has the right of way. 4. No man of the unit in occupation will leave his post until he has actually been relieved and has transmitted all orders and information relative to that post. 5. Liaison must be established, immediately on arrival, with the units on the flanks and with headquarters in the rear. Captains must make sure that their runners are thoroughly acquainted with the routes of communication. 6. As soon as relief is accomplished both captains will report that fact to their respective commanders.