Land Navigation and Map Reading

Question 1

What covers Land Navigation?

Answer 1

Training Circular (TC) 3-25.26

Question 2

What is the definition of a map?

Answer 2

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

Question 3

Who is responsible for securing maps for the unit?

Answer 3

S2

Question 4

What are the three map sizes?

Answer 4

Small, medium, and large

Question 5

Where will you find the Declination Diagram of a Map and what does it represent?

Answer 5

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

Question 6

What are the Colors of a Military Map and What do they Represent?

Answer 6

1. Black: cultural features, surveyed spot elevations, and labels.
2. Red-Brown: cultural features, relief features, nonsurveyed spot elevations.
3. Blue: hydrography or water features.
4. Green: vegetation with military significance.
5. Brown: relief features and elevation.
6. Red: cultural features on older maps.

Question 7

What does UTM Stand for?

Answer 7

Universal Transverse Mercator Grid

Question 8

What are the three types of north?

Answer 8

True (north pole), magnetic (compass), and grid (map)

Question 9

What is the rule of thumb for reading maps?

Answer 9

Right and Up

Question 10

How many grid zones is the world divided into?

Answer 10

60

Question 11

How close will an eight digit grid get you?

Answer 11

within 10 meters

Question 12

How close will a six digit grid get you?

Answer 12

within 100 meters

Question 13

How close will a ten digit grid get you?

Answer 13

within 1 meter

Question 14

What is an Azimuth?

Answer 14

An azimuth is defined as a horizontal angle measured clockwise from a north base line

Question 15

What is a Back Azimuth?

Answer 15

A back azimuth is the opposite direction of an azimuth

Question 16

What is the Grid-Magnetic Angle?

Answer 16

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

Question 17

What is Intersection?

Answer 17

Intersection is the location of an unknown point by map sighting from at least two known positions

Question 18

What is Resection?

Answer 18

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

Question 19

What is Modified resection?

Answer 19

Modified resection is the method of locating one’s position on the map when on a linear feature

Question 20

What are the ways to determine your location on a map?

Answer 20

Resection, Modified Resection, and Intersection

Question 21

What are the three major parts of the Lensatic Compass?

Answer 21

1. Cover
2. Base
3. Lens

Question 22

What are the two techniques for using the Lensatic Compass?

Answer 22

1. the Centerhold Technique
2. the Compass-to-Cheek Technique

Question 23

What does GPS stand for?

Answer 23

Global Positioning System

Question 24

What are the different types of contour lines?

Answer 24

Index, Intermediate, and Supplementary

Question 25

What are the Five Major Terrain Features?

Answer 25

1. Hill 2. Saddle 3. Valley 4. Ridge 5. Depression

Question 26

What are the Three Minor Terrain Features?

Answer 26

1. Draw 2. Cliff 3. Spur

Question 27

What are the two supplementary terrain features?

Answer 27

Cut and fill

Question 28

What is Map Orientation?

Answer 28

The first step to land navigation; aligning map north-south with ground north-south

Question 29

What are the Three Land Navigation Methods?

Answer 29

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

Question 30

What does the acronym OCOKA stand for?

Answer 30

Observation and Fields of Fire, Cover and Concealment, Obstacles, Key Terrain, and Avenues of Approach

Question 31

How many degrees are in a compass?

Answer 31

360

Question 32

How many mils are in a compass?

Answer 32

6400

Question 33

How many mils are in one degree?

Answer 33

17.7