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Beginning with such navigation fundamentals as understanding grid references on maps and how to use a compass and GPS (global positioning system), "The SAS Guide to Tracking and Navigation" goes on to provide detailed information on such subjects as finding your way without a map or compass, reading the sun and stars, navigating in extreme environments, marking trails, signaling for help, and tracking both animals and people as well as basic tips on how to elude being tracked yourself. Every procedure is demonstrated in step-by-step diagrams that clearly outline what to do and what not to do in order to bring you and your companions safely to your destination.