xiii. Obstacles to movement, such as streams with high banks

and bogs.

If time admits a rough map on a scale of about 4 inches to 1 mile, showing the proposed positions of the guns and 1st line wagons, the approaches to them and the position of any natural screens, will be a valuable addition to the report and will often save much writing.

Concurrently with the above any information obtainable on the following points should be noted and reported:--

(_a_) Description of the enemy’s position giving approximate relative heights. (_b_) Likely positions for the enemy’s guns or observing stations. (_c_) Any earthworks that can be observed.

2. A panorama sketch of the enemy’s position should, if possible, be made and will save much writing. For firing at moving objects from under cover, for switches, and in night firing a sketch of this nature is invaluable.

Plate IX shows a form on which the sketch may be made so as to render it a most useful and practical aid more particularly adapted to hilly country. It will be seen that the lateral angle and the angle of sight to any point can be judged with considerable accuracy at a glance. It has, moreover, the great advantage that, with its assistance, the poorest draughtsman can produce a useful, panoramic sketch.

The sketch should show the principal features in outline, one of which near the centre of the field of view is chosen as the reference point. A line is drawn from each of these features, with the range and description marked thereon, also the angle of sight on the right of the line and the lateral angle, in degrees, between it and the reference point on the left of the line, thus--=L.A. 4° | L 3°=.

The sketch should state clearly the point from which it is made.

3. If time does not admit of this sketch, it may be replaced by a range-taker’s card (Plate X), on which the following should appear:--