I spend alot of time (several years) operating in primary jungles and bushes when I was in the military. Then we do not have Handphones, GPS, Satellite Phones, or Beacons etc (at least not make available to us and commercially not within my affortability).
So my only navigation equipment then was a compass and a seriously outdated topo map. We do carry military signal radios and handheld flares but that is always out of range or obstructed by the trees. A prismatic compass is best, which nowadays I use it as a backup for GPS. And we are nevered short of affortable Sat/GSM communications equipment, so never be lost again, unless you do not wished to be found
