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As a general rule, one mounted officer from every infantry unit, from the battalion up, reports to the next higher commander for the purpose of maintaining communication. This officer may detail a cyclist or trooper to accompany him. He is to be prepared to give all necessary information in regard to his unit, and to keep in touch with the general situation in order to inform his immediate superior in regard to it. He communicates with his own unit either by sending orderlies with messages, or by carrying the orders of the commander in person."

6. COMMUNICATION ON THE BATTLEFIELD.

Cyclists and mounted messengers can be employed on the battlefield only when the conditions are exceptionally favorable; even intrenched connecting posts communicating with one another by means of shouts or signals do not absolutely ensure communication in a protracted engagement. Heliographs or signal lamps are valuable only during the approach to the battlefield and in large battles. The same is true of the field telegraph, by means of which, for example, division headquarters may be connected with the headquarters of the corps. In an infantry combat, only the field telephone, wig-wag flags, and signal flags can be used. The employment of telephone and telegraph has the advantage of ensuring greater quiet at headquarters, since the coming and going of messengers is eliminated; on the other hand, the commander is at once informed of every reverse (which may perhaps be only temporary) and will not always be able to resist the temptation of leading subordinate commanders by apron strings. The Japanese made a very extensive use of the various means of communication, but neglected to guard against an interruption of their lines of information by installing signal flag stations. This cannot be dispensed with. In the Japanese army visual signals were not used, and in the Russian army they were not