TC 3-25.26, Map Reading and Land Navigation

Question 1

What is a Map?

Answer 1

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

Question 2

Which publication covers Land Navigation?

Answer 2

TC 3-25.26

Question 3

What is the purpose of a map?

Answer 3

To provide accurate information about the existence, location, and distance between ground features.

Question 4

What are the major terrain features?

Answer 4

Hill, valley, ridge, saddle, depression.

Question 5

What are the colors on a military map, and what do they represent?

Answer 5

Black–man-made features, buildings and roads.
Blue–water features

Green–Vegetation
Red–roads, cultural features
Brown–relief features, cultivated land
Red-brown–contour lines, cultural and relief features.

Question 6

What are contour lines?

Answer 6

They show relief and elevation.

Question 7

List the 3 types of contour lines.

Answer 7

Index, Intermediate, Supplementary.

Question 8

List the 3 Norths on a military map.

Answer 8

True North
Magnetic North
Grid North

Question 9

Where is the map legend found?

Answer 9

Lower left margin

Question 10

What must be done to a map before it can be used?

Answer 10

It must be oriented.

Question 11

List the 3 minor terrain features.

Answer 11

Draw, Spur, Cliff

Question 12

List the 2 supplementary terrain features.

Answer 12

Cut. Fill

Question 13

What is an azimuth?

Answer 13

A horizontal angle measured clockwise from a north base line, used to express direction.

Question 14

What is the distance between grid lines on a combat map?

Answer 14

1km

Question 15

How many mils are in a circle?

Answer 15

6400 mils in 360 degrees

Question 16

Name two ways to hold a compass.

Answer 16

Compass-to-cheek method.

Center-hold method

Question 17

How do you figure out a back-azimuth?

Answer 17

Add or subtract 180 degrees

Question 18

What is a declination diagram?

Answer 18

Angular relationship between magnetic, grid, and true north.

Question 19

What are the common scale sizes for maps?

Answer 19

1: 1,000,00
1: 250,000
1: 50,000

Question 20

What are two methods for determining unknown map locations?

Answer 20

Intersection: location of an unknown point
Resection: locating one’s position

Question 21

What are 4 methods of measuring a direction?

Answer 21

Lensatic compass
M2 Artillery compass
Wrist/Pocket compass
protractor

Question 22

How close will an eight digit grid get you to your point? 6 digit? 4 digit?

Answer 22

10m
100m
1000m

Question 23

What units of measurement are used for direction?

Answer 23

Degree, Mil, Grad

Question 24

3 field-expedient methods of determining the cardinal directions?

Answer 24

Shadow-tip method
Watch method
Star method

Question 25

What is a military city map?

Answer 25

Topographic map showing the details of a city, including street names and important buildings

Question 26

What is the scale commonly used for a military city map?

Answer 26

1:12,550 scale, sometimes 1:5,000

Question 27

Describe the flash to bang method for measuring distance.

Answer 27

Determines range to an explosion or enemy fire. Count the seconds between when you see the flash and hear the weapon. Each second is 330m to the target.

Question 28

What symbol represents true north?

Answer 28

Star

Question 29

What are some methods of depicting relief?

Answer 29

Contour lines, form lines, relief shading, hachures, layer tinting

Question 30

What is meant by the Military Grid Reference System?

Answer 30

Used as a geocode for the globe; point reference system derived from the UTM and UPS grid system

Question 31

Military maps are categorized by what 2 things?

Answer 31

Scale and type

Question 32

The graphic scale is divided into 2 parts, what are they?

Answer 32

Primary to the right of 0, extension to the left

Question 33

Where does a map generally get its name?

Answer 33

Largest settlement or natural feature in the area

Question 34

What does UTM stand for?

Answer 34

Universal Transverse Mercator Grid