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Questions and Answers
What is the Field Manual for map reading and land navigation?
What is the Field Manual for map reading and land navigation?
FM 3-25.26
What are the basic colors of a map, and what does each color represent?
What are the basic colors of a map, and what does each color represent?
Black, Red-Brown, Blue, Green, Brown, Red, Other
What are military symbols?
What are military symbols?
Figures used to represent types of military organizations, installations, and activities.
Where is the Legend of the map found?
Where is the Legend of the map found?
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What are contour lines?
What are contour lines?
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What are the 3 types of contour lines?
What are the 3 types of contour lines?
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How many mils are in one degree?
How many mils are in one degree?
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How many North's are there on a military map?
How many North's are there on a military map?
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What shape are the contour lines that indicate a hill?
What shape are the contour lines that indicate a hill?
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What shape are the contour lines that indicate a saddle?
What shape are the contour lines that indicate a saddle?
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What shape are the contour lines that indicate a valley?
What shape are the contour lines that indicate a valley?
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What shape are the contour lines that indicate a ridge?
What shape are the contour lines that indicate a ridge?
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What shape are the contour lines that indicate a depression?
What shape are the contour lines that indicate a depression?
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What shape are the contour lines that indicate a draw?
What shape are the contour lines that indicate a draw?
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What shape are the contour lines that indicate a spur?
What shape are the contour lines that indicate a spur?
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What shape are the contour lines that indicate a cliff?
What shape are the contour lines that indicate a cliff?
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What shape are the contour lines that indicate a cut?
What shape are the contour lines that indicate a cut?
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What shape are the contour lines that indicate a fill?
What shape are the contour lines that indicate a fill?
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What must be done to a map before it can be used?
What must be done to a map before it can be used?
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What are the 5 major terrain features found on a map?
What are the 5 major terrain features found on a map?
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What are the 3 minor terrain features found on a military map?
What are the 3 minor terrain features found on a military map?
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What are the 2 supplementary terrain features found on a military map?
What are the 2 supplementary terrain features found on a military map?
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What is a map?
What is a map?
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What is an azimuth?
What is an azimuth?
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Study Notes
Map Reading and Land Navigation
- FM 3-25.26 is the Field Manual for map reading and land navigation.
Basic Map Colors
- Black: Man-made features (buildings, roads), surveyed spot elevations, all labels.
- Red-Brown: Cultural features and all relief features, non-surveyed spot elevations, contour lines on red-light readable maps.
- Blue: Hydrography (lakes, rivers, swamps).
- Green: Vegetation significant to military operations (woods, orchards).
- Brown: Relief features and elevation contours, cultivated land on red-light readable maps.
- Red: Cultural features like populated areas and main roads on older maps.
- Other Colors: Occasionally used for special information, indicated in marginal notes.
Military Symbols
- Represent types of military organizations, installations, and activities.
Map Legend
- Located in the lower left margin of the map.
Contour Lines
- Imaginary lines connecting equal elevation, indicating high and low ground.
- Types of contour lines include:
- Index: Main lines, usually labeled.
- Intermediate: Lines between index lines.
- Supplementary: Dashed lines, rarely labeled.
Angular Measurement
- One degree equals 17.7 mils.
Types of North on Military Maps
- True North: Geographic north pole.
- Magnetic North: Direction a compass points.
- Grid North: Orientation of the grid lines on a map.
Contour Line Shapes and Features
- Hill: Concentric circles; hilltop at the smallest closed circle.
- Saddle: Hourglass shape.
- Valley: U-shaped or V-shaped lines.
- Ridge: U or V shaped, with closed end pointing away from high ground.
- Depression: Closed contour lines with tick marks pointing low.
- Draw: U or V shaped, pointing toward high ground.
- Spur: U or V pointing away from high ground.
- Cliff: Contour lines very close together.
- Cut: Line with tick marks extending to the roadbed.
- Fill: Line with tick marks pointing toward lower ground.
Map Orientation
- A map must be oriented before use.
Major Terrain Features
- Hill
- Ridge
- Valley
- Saddle
- Depression
Minor Terrain Features
- Draw
- Spur
- Cliff
Supplementary Terrain Features
- Cut
- Fill
Definition of a Map
- A graphic representation of the earth's surface drawn to scale, viewed from above.
Azimuth
- A horizontal angle, measured clockwise from a north baseline.
Studying That Suits You
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Description
Test your knowledge on land navigation and map reading with this flashcard quiz based on the Army Board Study Guide. Learn about essential field manuals and the significance of map colors in navigation.
