Recently information has come in from German sources of what seems to be a simple
visual signal system for artillery fire control in the event of failure of other
means of communication. Apparently, it is employed between OP and gun position. Also, it
may possibly be used between a forward observer and his communications detachment, when, for
one reason or another, it is necessary for the latter to remain at a distance from the observer.
No knowledge of any general signal code is required, and the apparatus can be nailed
together and painted in half an hour.
Two disks or panels (see sketches) are required, attached to short rods or handles--such
as a barrelhead nailed to a broomstick. The disk is possibly painted half red, half white
or whatever other colors that may be more suitable to the background. These disks are
used as shown in the accompanying sketches. At night, lights are used.
VISUAL SIGNAL SYSTEM|