The elevation of points on the ground and the relief of an area affect the movement,
positioning, and, in some cases, effectiveness of military units. Soldiers must know how to
determine locations of points on a map, measure distances and azimuths, and identify
symbols on a map. They must also be able to determine the elevation and relief of areas on
standard military maps. To do this, they must first understand how the mapmaker indicated
the elevation and relief on the map.