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method is to diverge from the original course at a diagonal to clear the obstacle, returning to the course by the same angle on the opposite side of the obstacle and with the same number of paces (see fig. 10).
Fig. 10. Two methods of maintaining a compass course around obstacles. Orienting the map.—The compass is necessary if landmarks cannot be identified. Keeping the north—south line of the compass case parallel to any north-south grid on the map, rotate the map and compass until the north end of the compass needle coincides with the local declination. All directions on the map will then coincide with those on the ground. |
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