TC 3-25.26 Land Navigation and Map Reading

Question 1

How many mils are in one degree?

Answer 1

17.7 mils

Question 2

How many mils are in a compass?

Answer 2

6400 mils

Question 3

How many degrees are in a compass?

Answer 3

360 degress

Question 4

What does the acronym OCOCKA stand for?

Answer 4

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

Question 5

What are the three land navigation methods?

Answer 5

Dead Reckoning, Terrain Association, and a combination of techniques.

Question 6

What is Map orientation?

Answer 6

The first step to land navigation, when the north south on the map aligns with the north south on the ground

Question 7

What are the two supplementary terrain features?

Answer 7

Cut
Fill

Question 8

What are the three minor terrain features?

Answer 8

Cliff
Draw
Spur

Question 9

What are the five major terrain features?

Answer 9

Hill
Saddle
Ridge
Valley
Depression

Question 10

What are the different types of contour lines?

Answer 10

Index, Intermediate, Supplementary

Question 11

What does GPS stand for?

Answer 11

Global Positioning System

Question 12

What are the two techniques for using the lensatic compass?

Answer 12

Center Hold
Cheek Hold

Question 13

What are the three major parts of the lensatic compass?

Answer 13

Cover
Base
Lens

Question 14

What are the ways to determine your location?

Answer 14

Resection
Modified Resection
Intersection

Question 15

What is modified resection?

Answer 15

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 roach or canal or stream

Question 16

What is resection?

Answer 16

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 a map

Question 17

What is intersection?

Answer 17

Location of an unknown point by successively occupying at least two known positions on the ground and then map sighting on the unknown location

Question 18

What is the grid magnetic angle?

Answer 18

the angular size that exists between grid north and magnetic north

Question 19

What is a back azimuth?

Answer 19

the opposite direction of an azimuth.

Question 20

What is an azimuth?

Answer 20

is defined as a horizontal angle measured clockwise from a north base line: the azimuth is the most common military method to express direction

Question 21

How close will a 10 digit grid get you?

Answer 21

within 1 meter

Question 22

How close will a 8 digit grid get you?

Answer 22

within 10 meters

Question 23

How close will a 6 digit grid get you?

Answer 23

within 100 meters

Question 24

How many grid zones is the world divided into?

Answer 24

60

Question 25

What is the rule of thumb for reading maps?

Answer 25

Right and up

Question 26

What are the three types of norths?

Answer 26

Grid, Magnetic and True

Question 27

What does UTM stand for?

Answer 27

Universal Transverse Mercator Grid

Question 28

What are the colors of a military map? What do they represent?

Answer 28

Black- Man Made Features
Red- Brown- Relief Features
Blue- Water Features
Green- Vegetation
Brown- Relief Features (contour lines)
Red- populated areas, main roads

Question 29

What are the three map sizes?

Answer 29

Small, medium, large

Question 30

Who is responsible for securing maps for the unit?

Answer 30

s2

Question 31

Definition of a map?

Answer 31

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