land navigation

finding your way

identified terrain features on a map 071-COM-1001

1. major terrain features: hill, valley, ridge, saddle, depression.
2. minor terrain features: spur (away from high ground), draw (towards high ground), cliff
3. supplementary terrain features: cut (into), fill (out)

determine the grid coordinates of a point on a military map 071-COM-1002

easting (to the right), northing (up) moving horizontal and vertical line to point. left to right. and down to up.

Format of grid coordinates: 18T(grid zone identifier) WL (square identification) 1234 (easting) 5678 (northing)

18TWL 1234 5678

determine grid azimuth using a protractor 071-COM-0018

1. identified the starting point on the map
2. identified the ending point on the map
3. drew a straight line on the map connecting the two points
4. aligned the protractor to the map
5. determined the value of the angle
6. Grid north-Magnetic north subtracted number provided

use bar scale on map to identify distance A to B

or use protractor 0 to point to the next point (A to B). measure on 1000 distance for scale.

back azimuth

180 + x if the sum of two is less than 360. 180 -x if the sum of the two is more than 360.

grid coordinates distance

4 digit: 1000, 6 digit: 100, 8 digit: 10 meters, 10 digit: 1 meter.

black

cultural man-made buildings

red brown

contour lines

blue

hydrography/water features

green

significant vegetation (woods)

brown

cultivated land

red

populated areas main roads

other

special; see marginal information

1. index
2. intermediate
3. supplementary

1. every 5th, heavy line with a number
2. the 4 finer lines between the indexes
3. lines resembling dashes: used if very little elevation change in the area