Page:Tactics (Balck 1915).djvu/147

 hostile fire must be taken up in time, since it is not always possible to make use of cover. The efficacy of the fire depends upon the accurate determination of the range and height of burst (fire for adjustment) and upon the careful observation of the subsequent fire (fire for effect). The effect of this fire is considerably increased when the opponent's infantry, against whom the fire is directed, takes up unsuitable formations (particularly broad line formations). Infantry has frequently found it advantageous to advance in small detachments moving rapidly at irregular intervals in extended order.

(a) Increasing the Difficulties in the Adjustment of the Hostile Fire.

A battery requires about 0.8 minutes (5 to 6 rounds with percussion fuze) to secure adjustment at ranges up to 750 m. The time required for securing adjustment at the longer ranges is as follows:

At 800-1500 m., on low infantry targets, 1.5 min., 6-9 rounds with perc. fuze; " 1700-2250 m., "  "     "        "  , 3.7  "  ,  11   "     "     "     "; " 2000-3000 m., on artillery targets,   4.6  " ,  11   "     "     "     ";

Narrow columns moving to their right or left front are very unfavorable targets for artillery, as it is very difficult for a battery commander to determine the relative position of bursts on the flank of a column with respect to the leading element thereof. Such shots are frequently considered as over. Numerous small columns, which make it difficult to designate a target, increase the time required by the hostile artillery to secure adjustment.

Troops should not be posted in the vicinity of con-*