US Army Quartermaster AIT Gold Pass Practice Exam

Navigation uses different reference directions for bearings: True North points to the geographic North Pole, Magnetic North is where a compass needle tends to point due to the Earth's magnetic field, and Grid North follows the lines of a map’s grid. The South Pole is a geographic location at the southern end of the Earth, not a direction or reference used for navigation. Because it doesn’t serve as a bearing reference like the other three, it isn’t a north type.