=2. Need of System in describing Targets.=--As service targets, such as a fold in the ground or a patch of open ground, will often be without any definite feature to distinguish them from similar aiming-points near them, or to locate their position exactly, and as targets generally will be difficult to describe on ground devoid of prominent or well-marked features, it is necessary to adopt a system of description which will enable fire-unit commanders to indicate the most difficult aiming-points to their men clearly by some consistent method. =3. Description Points.=--A good system of indicating targets is by description-points, consisting of natural or other features of the ground in the frontage allotted to an unit. If targets cannot be indicated sufficiently accurately by description-points alone, supplementary methods, known respectively as the Finger-breadth and Clock-face methods, may be used in connection with description-points, as described in paras. 7 and 8. As a rule the former of these supplementary methods only will be employed, and both will seldom be employed together in combination with description-points. =4. Selecting Description-Points.=--(i) Company officers will select description-points when occupying a position or at the conclusion of movement. The number of description-points necessary will depend on the nature of the ground, and whether it has much or little detail in the shape of prominent natural and other features; but points should be selected so as to facilitate the indication of targets in all parts of the field of fire. (ii) _The most prominent objects should be chosen._ They should be in the distance or middle of the field of fire, and as far off as possible. No two points, if it can be avoided, should be similar--as, for instance, two church spires or clumps of trees. The points should be at least two hands’ breadth apart. Each point should be named, and the name by which it is to be known should be communicated to fire-unit commanders and the men of their units. (iii) There will usually be more time for selecting description-points in defence than in attack. For example, Fig. 46 illustrates a field of fire in front of a defensive position, in which almost every feature of ground has been named and the range of all prominent objects taken. Such preparation will be impossible, and to a great extent unnecessary, in attack, when time for even a short preliminary reconnaissance may not always be available. _Company, platoon, and section commanders should therefore be trained to select a few good description-points as quickly as possible, and indicate them by suitable names to their commands._