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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, non-surveyed 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. Other - Occasionally other colors may be used to show special information.

These are indicated in the marginal information as a rule. Figures used to represent types of military organizations, installations, and activities.

Imaginary lines on the ground connecting equal elevation, they represent high and low ground elevation. Three: True north Magnetic north Grid north. A hill is shown on a map by contour lines forming concentric circles. The inside of the smallest closed circle is the hilltop. A saddle is normally represented as an hourglass.

Contour lines forming a valley are either U-shaped or V-shaped. Contour lines forming a ridge tend to be U-shaped or V-shaped. The closed end of the contour line points away from high ground. Usually only depressions that are equal to or greater than the contour interval will be shown. On maps, depressions are represented by closed contour lines that have tick marks pointing toward low ground. The contour lines depicting a draw are U-shaped or V-shaped, pointing toward high ground.

Contour lines on a map depict a spur with the U or V pointing away from high ground. Cliffs are also shown by contour lines very close together and, in some instances, touching each other. This contour line extends the length of the cut and has tick marks that extend from the cut line to the roadbed, if the map scale permits this level of detail.

This contour line extends the length of the filled area and has tick marks that point toward lower ground. If the map scale permits, the length of the fill tick marks are drawn to scale and extend from the base line of the fill symbol. Hill Ridge Valley Saddle Depression. A horizontal angle, measured in a clockwise manner from a north base line, expressing direction. In military symbols, what colors are used for a map overlay and what do they represent?

Blue- Friendly forces Red-Enemy forces Black- boundaries Yellow-contaminated area both friendly and enemy Green- engineer obstacles, both friendly and enemy. To obtain a back azimuth from an azimuth, add degrees if the azimuth is degrees or less; subtract degrees if the azimuth is degrees or more.

Shows the angular relationship between the magnetic north, grid north and true north. An aerial photograph is any photograph taken from an airborne vehicle aircraft, drones, balloons, satellites, and so forth.

The lensatic compass has a bezel ring; each bezel ring click is equal to how many degrees? Gray- alternate color for brown, Yellow- built up areas, and Pink- political boundaries. Imaginary lines that run north to south originating in Greenwich, England and measured in degrees.

Portrays terrain and land forms in a measurable way as well as horizontal features of the positions represented. Those maps with scales of ,, and smaller are used for general planning and for strategic studies. The standard small-scale map is ,, This map covers a very large land area at the expense of detail. Those maps with scales larger than ,, but smaller than , are used for operational planning. They contain a moderate amount of detail, but terrain analysis is best done with the large-scale maps described below.

The standard medium-scale map is , Medium scale maps of , are also frequently encountered. Those maps with scales of , and larger are used for tactical, administrative, and logistical planning. These are the maps that you as a soldier or junior leader are most likely to encounter. The standard large-scale map is ,; however, many areas have been mapped at a scale of , Finding the location of an unknown point by sighting two or more known points.

When used correctly, a map can give you accurate distances, locations and heights, best routes key terrain features and cover and concealment information. Northeast Southeast Northwest Southwest. What are the three elements for a land navigation process known as Dead Reckoning? Known starting point Known distance Known azimuth. Plotting or locating an unknown point using an azimuth and a distance from a known starting point.

On a lensatic compass there are two rings, an outer black ring and an inner red ring, what are they used for? The inner red ring is used to find degrees, and the outer black ring is used to find mils. It is the vertical distance between contour lines. The amount of the contour level is located in the Marginal Information on the map. You must find at least how many known locations on a map and the actual ground in order to plot your location accurately? Best Military Credit Cards.

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FM 3-25.26

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FM 3-25.26 Land Navigation Flashcards Preview



Land Navigation / Map Reading




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