Land Nav

TC 3-25.26

Black signifies man made features such as buildings and roads. Blue signifies water. Green signifies dense vegetation. Brown signifies relief features and elevation. Red signifies cultural features like cities, forts, and boundaries. On red-light maps, red and brown are combined.

True north, magnetic north, and grid north.

10

Within 10 meters.

Within 100 meters.

360

A pace is equal to one natural step. The average step about 30 inches long, but every soldier's step naturally varies, so it is imperative you find your own pace count. To use pace count accurately, a Soldier knows how many paces it takes to walk 100 m. To determine this, walk an accurately measured course (like 100 m or 600 m) and count the number of paces. If using a 600 m course, divide the total paces by 6 to find the average paces per 100 m. Each person who navigates dismounted should know their own pace count.

It can be jammed, spoofed, or lose signal in dense terrain.

Elevation and the shape of the terrain.

This is located in the lower margin of large-scale maps and indicates the angular relationships of true north, grid north, and magnetic north.

The opposite direction of an azimuth.

Lay a straight-edged piece of paper on the map so that the edge touches both points and extends past them. Make a tick mark on the edge of the paper at each point. Move the paper to the graphic bar scale. Align the right tick mark with a printed number in the primary scale so that the left tick mark is in the extension scale. The primary scale gives the whole unit distance, and the extension scale gives smaller increments.

A graphic representation of a portion of the earth’s surface drawn to scale, as seen from above.

Right and Up.

Intersection is the location of an unknown point by successively occupying at least two (preferably three) known positions on the ground, and then map sighting on the unknown location. It is used to locate distant or inaccessible points or objects such as enemy targets and danger areas.

Resection is the method of locating one’s position on a map by determining the grid azimuth to at least two well-defined locations that can be pinpointed on the map.

Modified resection is the method of locating one’s position on the map when the person is located on a linear feature on the ground, such as a road, canal, or stream.

The cover, base, and lens.

Centerfold and Compass-to-Cheek.

Hill, Saddle, Valley, Ridge, Depression.

6400

A graphic scale is a ruler printed on the map that is used to convert distances on the map to actual ground distances.

Concentric circles.

U or V shapes pointing downhill.

U or V shapes pointing uphill

Destroy them, they are classified.

Small, medium, and large.

60

A horizontal angle measured clockwise from a north base line.

The G-M angle value is the angular size that exists between grid north and magnetic north.

Global Positioning System.

Draw, Cliff, and Spur.

Aligning north on the map to north on the ground by rotating the map. The first step to land navigation.

Dead Reckoning, Moving by Terrain Association, and Combination of Techniques.

17.7

Place a tick mark on the paper and map at the beginning point. Align the edge of the paper along a straight portion and make a tick mark on both map and paper when the paper leaves the straight portion. Keeping both tick marks together, pivot the paper until another straight portion is aligned with the edge. Continue this until the measurement is completed. Move the paper to the graphic scale to determine the ground distance from the first tick mark to the last.

It supports the Soldier’s ability to move, shoot, and communicate effectively in all environments.

A miniature representation of terrain elevation using shaded relief.

A linear feature (e.g., road or stream) used to guide movement.

Navigating by calculating distance and direction from a known point.