Carefully indicate the point from which each range is taken. Use prominent, easily identified landmarks as reference points. Indicate by whom and how ranges were determined. 10. Report any repairs needed in trenches or obstacles. 11. Position of suspected mines. 6. _Equipment._—Telescopes, rather low power, are preferable to field glasses for observation and reconnaissance. Care must be taken to render them as inconspicuous as possible and prevent their location by the enemy through reflection of light from the object glass. Telescopic periscope. Rifle rest.—Various sorts have been devised, usually not merely to serve the purpose of a rest, but to expedite resumption of aim and change in direction or elevation. Telescopic sights. Sniperscope.—(A device for aiming with the head below the line of sight. Reports indicate that with this device the tendency is to shoot high, and that they are only reasonably accurate up to ranges of 200 yards. They are usually used over parapets, between sandbags. Proper adjustment is essential and great care necessary to prevent derangement.) Steel helmet and mask. Maps, sketches, note-book, message blanks, pencils, pocket knife. Each post should have a range chart for use of all reliefs. The above is additional to the normal equipment of the soldier. 7. _Duties of commander of sniping group_: (_a_) Training of snipers and maintenance of efficiency. (_b_) To supervise the work of his unit. (_c_) Responsibility for care of equipment. (_d_) To receive and transmit to the proper authority all information turned over by the posts he relieves and by his own posts. (_e_) To select the positions for sniper’s posts and supervise the construction of loopholes and other special arrangements when not already provided. [Illustration: A SNIPERSCOPE. ] 8. _Location of sniper’s posts._—Though engaged in trench warfare snipers are not invariably located in trenches. When not so located the sniper will avail himself of such cover as best suits his purpose. If practicable he will so dress himself as to blend with his surroundings, giving particular attention to his face and hands. Masks of inconspicuous color are sometimes worn. He must study the maps and the ground and endeavor to determine in advance good localities for observation and good lines of approach. His line of retreat must also be decided on as early as possible. The arts of the deerstalker and poacher, or those practiced in our early Indian troubles will be of great use under these circumstances, as his success will depend largely upon his patience and cunning. Houses and other buildings should be viewed with distrust, as they may be closely observed by the enemy. Trees will also receive this scrutiny. The best cover will be that which is least likely to be suspected of affording concealment for a man. [Illustration: THE SNIPER WITH TELESCOPIC SIGHT. HIS OBSERVER WITH PERISCOPE. ] [Illustration: