Land Navigation 1- Intro to the Military Compass

Question 1

How is direction measured in the military?

Answer 1

• Direction is expressed as units of angular measure from a base line.
• Military used azimuth.

Question 2

What are the two systems of measurement used in the military?

Answer 2

1. Degrees - 360 deg on a compass

2. Mils - circle is divided into 6400 mils

Question 3

What are the types of North?

Answer 3

• True North
• Magnetic North
• Grid North

Question 4

What is True North?

Answer 4

• A line from any point on the earth surface to the N. Pole.
• All lines of longitude are true north lines.
• Shown on a map w/ a north star.

Question 5

What is Magnetic North?

Answer 5

• The direction to the north magnetic pole, as shown by magnetic compass.
• Shown on a map w/ half arrow.

Question 6

What is Grid North?

Answer 6

• The north that is est. by using the vertical grid lines on a map.
• Shown by letter GN.

Question 7

What is a Azimuth?

Answer 7

A horizontal angle, measured in a clockwise manner from a north base line.

Question 8

What is the Back Azimuth?

Answer 8

The opposite direction of an azimuth.

Question 9

What is the approx. distance a compass should be distanced from a metal helmet or rifle while taking a reading?

Answer 9

.5 meters

Question 10

What is the approx. distance a compass should be distanced from a machine gun while taking a reading?

Answer 10

2 meters

Question 11

What is the approx. distance a compass should be distanced from a telephone wires and barbed wire while taking a reading?

Answer 11

10 meters

Question 12

What is the approx. distance a compass should be distanced from field guns and tanks while taking a reading?

Answer 12

18 meters

Question 13

What is the approx. distance a compass should be distanced from power lines while taking a reading?

Answer 13

55 meters

Question 14

What are some factors that affect pace count?

Answer 14

• Slopes
• Winds
• Surfaces
• Elements
• Clothing
• Stamina