Sector daily reports (kept by the adjutant).
Intelligence reports (kept by the intelligence officer).
Construction reports (kept by the engineer officer).
Maps, sketches, and aëroplane photographs (kept by int. officer).
Inventory of the sector depot (kept by engineer officer).
Any officer of the sector, as for example a machine gun officer, has access to this file to more thoroughly acquaint himself for the execution of his duties.
CHAPTER V
DEFENSE OF A POSITION
Different Kinds of Hostile Attacks
Surprise Attacks. These may be raids or local attacks. A raid is usually for the purpose of taking prisoners; and a local attack, to capture a part of the line. These operations may be carried out without a preliminary bombardment, but are usually preceded by a short intense bombardment to destroy wire entanglements.
Attacks in Force. Such an attack may be made on a larger part of the line, as a particular sector, or on a considerable length of front in a general offensive. This kind of attack is, of course, preceded by a bombardment.