The instruction in firing will be preceded by a command for loading. Loadings are executed in line and skirmish line only. =122.= Rifles having been ordered loaded are kept loaded without command until the command =unload= or =inspection arms=, fresh clips being inserted when the magazine is exhausted. =123.= The aiming point or target is carefully pointed out. This may be done before or after announcing the sight setting. Both are indicated before giving the command for firing, but may be omitted when the target appears suddenly and is unmistakable; in such cases the battle sight is used if no sight setting is announced. The troopers must be practiced repeatedly in locating targets, making the appropriate sight settings, and simulating fire on the target indicated. =124.= The target or aiming point having been designated and the sight setting announced, such designation or announcement need not be repeated until a change of either or both is necessary. Troops are trained to continue their fire upon the aiming point or target designated and at the sight setting announced until a change is ordered. =125.= If the men are not already in the position of load, that position is taken at the announcement of the sight setting; if the announcement is omitted, the position is taken at the first command for firing. =126.= When deployed, the use of the sling as an aid to accurate firing is discretionary with each man. =127.= The correct estimation of distances is of great importance in connection with all rifle firing except that at short ranges. Instruction of the recruit in this phase of training must not be delayed until range firing is taken up, but should be begun in the early instruction and carried forward progressively, thus gradually developing the faculties involved. In the same way the occasional firing of a few shots, first with blank cartridges and later with ball cartridges at short range and under conditions permitting very careful detailed supervision of each man's position, will be found of exceptional value as a preliminary exercise to the course of range firing prescribed for recruits. Detailed directions for conducting the instruction of the recruit in estimating distances and in rifle firing are prescribed in the =Small Arms Firing Manual=. TO LOAD. =128.= Being in line or skirmish line at halt: 1. =With dummy (blank or ball) cartridges=, 2. =LOAD.=