Army Promotion Board 2021: Land Nav
This flashcard set is based on TC 3-25.26 and provides a detailed overview of map reading and land navigation. It covers everything from map definitions, terrain features, azimuths, types of north, symbols, and grid systems to methods like intersection and resection. Essential for Soldiers and leaders, it reinforces skills needed to navigate accurately and safely using military maps in any environment.
What publication covers MAP READING and Land Navigation?
TC 3-25.26
Key Terms
What publication covers MAP READING and Land Navigation?
TC 3-25.26
What is the definition of a map?
A map is a graphic representation of a portion of the earth as it would be seen from above.
What does a map provide?
Information on the location of, and the distance between ground features.
What are the basic colors of a map, and what does each color represent?
Black
Red/Brown
Blue
Green
What are military symbols?
Figures used to represent military installations and activities
Where is the Legend of the map found?
Lower left margin
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| Term | Definition |
|---|---|
What publication covers MAP READING and Land Navigation? | TC 3-25.26 |
What is the definition of a map? | A map is a graphic representation of a portion of the earth as it would be seen from above. |
What does a map provide? | Information on the location of, and the distance between ground features. |
What are the basic colors of a map, and what does each color represent? | Black Red/Brown Blue Green |
| Figures used to represent military installations and activities |
| Lower left margin |
What are contour lines? | Imaginary lines on a map that represent high and low ground elevation |
What are the 3 kinds of contour lines? | Index Intermediate Supplementary |
How many mils are in 1 degree? | 17.7 mils |
How many North’s are on a military map? | 3 True north Magnetic north Grid north |
What must be done to a map before it can be used? | The map must be oriented by using a compass and terrain association |
What are 5 major terrain features found on a map? | The 5 major terrain features are hill, ridge, valley, saddle & depression |
What are the 3 minor terrain features found on a military map? | The 3 minor terrain features are draw, spur and cliff |
What are the 2 supplementary terrain features found on a military map? | The 2 supplementary terrain features are cut and fill |
What is an azimuth? | A horizontal angle, measured in a clockwise manner from a north base line, expressing direction |
What is vertical distance? | The distance between the highest and lowest points measured |
Which north is used when using a military map? | Magnetic north when using a compass, and grid north when using the map |
Why is a map so important? | When used correctly, a map can give you accurate distances, locations and heights, best routes key terrain features and cover and concealment information. |
If you find a symbol on a map that is unknown to you, where would you look? | The marginal data, located on the outside lower portion of the map |
What are the three main map sizes? | Small, medium & large |
What are two methods of measuring an azimuth? | Compass & protractor |
How close will an eight-digit grid get you to your point? | 10 meters |
How close will an six-digit grid get you to your point? | 100 meters |
What would you use on a map to measure actual ground distance? | The bar scale |
What is the name of the map system that the U.S. uses? | UTM |
What should you do with a map that is in danger of being captured? | Destroy it |
Why should you destroy a map that is in danger of being captured? | Because it could contain troop movements or positions of friendly soldiers. |
How many different types of maps are there? | 8 |
What should you use if Military Maps are not available? | Substitute maps. Foreign military or commercial maps, to field sketches. 7 |
What should a soldier do prior to using a particular map? | Read the instructions & orient it |
What does UTM stand for | Universal Transverse Mercator |
How many miles are there in 1 circle | 6400 mils |
What does the term intersection mean? | It's the process of finding an unknown point by using 2 or more known points. Your unknown point will be where the 2 known points intersect. |
What does the term resection mean? | Method of finding your location on a map by finding the azimuth of 2 or more locations. Your location will be where they cross |
Military symbol colors | |
You must find at least how many known locations on a map and the actual ground in order to plot your location accurately? | Atleast 20 |
How do you read a map | Right up |
How many meters are there between on grid lines on map | 1000 |
What is true north ? * | True north is the North Pole itself |
What is magnetic north? | The direction that the compass needle aligns with the earth's magnetic field Arrow head |
Grid north | Refers to direction northward along the grid lines of map |