TC 3-25.26 Flashcards
LAND NAVIGATION
What is the definition of a map?
A graphic representation of a portion of the earth’s surface drawn to scale, as seen from above
Where would you find useful information that will help you read a map?
In the Marginal Information
Before a map can be used, it must be…?
Oriented
How many degrees are in a compass?
360
What are the Colors of a Military Map and What do they represent?
Black- man-made features
Red-Brown- cultural features, all relief features, non-surveyed spot elevations, and elevation, Blue- hydrography or water features
Green- vegetation
Brown- Identifies all relief features and elevation
Red- Classifies cultural features, such as populated areas, main roads, and boundaries
How many Norths are on a Military Map?
Three; true north, magnetic north, and grid north
What are the two techniques for using the Lensatic Compass?
The Center Hold Technique
The Compass-to-Cheek Technique
What are the Five Major Terrain Features?
- Hill
- Saddle
- Valley
- Ridge
- Depression
What is the rule of thumb for reading maps? How do you go about identifying the correct grid square with coordinates?
Right and Up
What are the Three Minor Terrain Features?
- Draw
- Cliff
- Spur
What are the Two Supplementary Terrain Features?
- Cut
- Fill
What is an azimuth?
An azimuth is defined as a horizontal angle measured clockwise from a north base line; the azimuth is the most common military method to express direction
What does GPS stand for?
Global Positioning System
What are military symbols?
Figures used to represent types of military organizations, installations, and activities
Where is the legend of the map found?
Lower left Margin
What are contour lines?
Imaginary lines on the ground connecting equal elevation, they represent high and low ground elevation
What are 3 types of contour lines?
- Index
- Intermediate
- Supplementary
How many Mils are in one degree?
17.7 mils
