TC 3-25.26 Land Navigation Flashcards
What covers Land Navigation?
Training Circular (TC) 3-25.26
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
Who is responsible for securing maps for the unit?
S2
What are the Colors of a Military Map and What do they Represent?
- Black. Indicates cultural (man-made) features such as buildings and roads, surveyed spot elevations, and all labels.
- Red-Brown. The colors red and brown are combined to identify cultural features, all relief features, nonsurveyed spot elevations, and elevation, such as contour lines on red-light readable maps
- Blue. Identifies hydrography or water features such as lakes, swamps, rivers, and drainage
- Green. Identifies vegetation with military significance, such as woods, orchards, and vineyards
- Brown. Identifies all relief features and elevation, such as contours on older edition maps, and cultivated land on red-light readable maps
- Red. Classifies cultural features, such as populated areas, main roads, and boundaries, on older maps
What does UTM Stand for?
Universal Transverse Mercator Grid
What are the three types of north?
True (north pole), magnetic (compass), and grid (map)
What is the rule of thumb for reading maps?
Right and Up
How many grid zones is the world divided into?
60
How close will an eight digit grid get you?
within 10 meters
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 is the Grid-Magnetic Angle?
The G-M angle value is the angular size that exists between grid north and magnetic north
What are the ways to determine your location on a map?
Resection, Modified Resection, and Intersection
HINT Remember the acronym RIM
What does GPS stand for?
Global Positioning System
What are the different types of contour lines?
Index, Intermediate, and Supplementary
What are the Five Major Terrain Features?
Hill, Saddle, Valley, Ridge, Depression
HINT Remember Hidden Valley Ranch Salad Dressing