Doomsday Defense Topic
Navigation & Signals
Signaling for Rescue
Signal fires, mirrors, whistles, ground-to-air signals, flags and Morse code: making yourself seen and heard.
Field notes
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Lost? STOP: Stop, Think, Observe, Plan
The moment you realize you're lost, stop moving. Think, observe and plan. Staying put and making yourself visible usually gets you found faster.
In the library
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Visual Signaling (Signal Corps Manual No. 6)
The 1910 Army manual on signaling by flag, heliograph, lantern and semaphore, with codes and procedures for sending messages by sight.