Para. 214.—The decision to open fire must not be made too hastily. It is to be borne in mind that the fire can only have a decisive effect when it is directed against troops situated within effective range. The arm to which they belong has little to do with the question; the decisive point in choice of target is first and foremost the momentary tactical importance of that target. Afterwards fire must be turned on to those targets which, owing to their height, depth, breadth, and density, render a high percentage of hits probable.
Para. 215.—Good results from indirect fire can only be achieved if the range and position of the target are known, or if the fall or the effect of the shots can be observed from a point close to the detachment.
Para. 216.—Firing over one's own troops is only permissible when the nature of the ground renders possible the deployment of several firing lines one above the other.
Para. 217.—Firing by night can only promise success if the guns can be trained by daylight on to points where the enemy is expected, or if well-lit objects are taken as targets, such as bivouacs or camps.
Para. 218.—From the very beginning of an action it must be remembered that the number of cartridges carried is limited, and that the consumption of ammunition implies an expenditure of power which should only be made when it will meet with success. Should the
