| A | B |
|---|
| What field manual governs map reading and land navigation? | FM 21-26 (Map Reading and Land Navigation) |
| What is the definition of a map? | A map is a graphic representation of a portion of the earth's surface drawn to scale, as seen from above (FM 21-26 para 2-1) |
| Why are maps important? | When used correctly, a map provides information on the existence and location of and the distance between ground features, such as popluated places, routes of travel and communication. It also indicates variations in terrain, heights of natural features, and the extent of vegetation cover. (FM 21-26 para 2-2) |
| If a military map is no longer needed what disposition is made of it? | If it is no longer needed, it must be turned into the proper authority, or if in danger of being captured, it must be destroyed. (FM 21-26 para 2-4) |
| What is meant by scale of a map? | Scale is the ratio of fraction between the distance on the map and the corresponding distance on the surface of the earth. (FM 21-26 para 2-6a) |
| What type of map is normally used for tactical planning and what scale is it? | A standard large-scale map is 1:50,000 (FM 21-26 para 2-6a(3)) |
| What is a Planimetric map? | A map that presents only the horizontal positions for the features represented. (FM 21-26 para 2-6b(1)) |
| What is a topographic map? | A map that portrays terrain features in a measureable way (usually through use of contour lines), as well as the horizontal positions of the features represented. (FM 21-26 para 2-6b(2)) |
| What is a photomap? | A reproduction of an aerial photograph upon which grid lines, marginal data, place names, route name, important elevations, boundaries, and approximate scale and direction have been added. (FM 21-26 para 2-6b(3)) |
| What is a Photomosaic? | An assembly of aerial photographs that is commonly called a mosaic in topographic usage. (FM 21-26 para 2-6b(5)) |
| How can you identify the map you want to use? | By sheet name and number (FM 21-26 para 3-1) |
| Name things that are found in the margin of a common military map? | Sheet name, sheet, number, series name, series number, edition number, index to boundaries, adjoining sheets diagram, elevation guide, declination diagram, bar scales, contour interval note, sheroid note, grid note, projection note, vertical datum note, horizontal datum note, control note, preparation note, printing note, grid reference box, unit imprint and symbol, and legend (FM 21-26 para 3-1) |
| What is a map sheet number and where can it be found? | The map sheet number is used as a reference number to link specific maps to overlays, operating orders, and plans. It can be found in bold print in the upper right margin and the lower left margin, and in the center box of the adjoining sheets diagram. (FM 21-26 para 3-1b) |
| What is the adjoining sheet diagram and where can it be found? | The adjoining sheet diagram is usually found in the lower right margin. The adjoining sheet diagram illustrates which map shet numbers are adjacent to that map sheet. (FM 21-26 para 3-1h) |
| What is the legend of a map? | It illustrates and identifies the topographic symbols used to depict some of the more prominent features on the map. (FM 21-26 para 3-1w) |
| Are the legend symbols always the same on every map? | No, always refer to the legend to avoid errors when reading map. (FM 21-26 para 3-1w) |
| If you are alone and using a map and found a symbol whose meaning was not known to you, what might explain it to you? | The map's legend contains the symbols used on that specific map sheet (FM 21-26 para 3-3) |
| What are the two types or categories of symbols on a map? | Topographical map symbols and military symbols (FM 21-26 para 3-3 and 3-4) |
| How is a man-made and natural feature depicted on a map? | Through the use of symbols (FM 21-26 para 3-3b) |
| What field manual covers topographical symbols? | FM 21-31 (Topographical Symbols) (FM 21-26 para 3-3b) |
| Where would you find a complete listing of military symbols commonly used on situation maps and overlays? | FM 101-5-1 (Operation Terms and Symbols) (FM 21-26 para 3-4) |
| What are the five basic colors used on a map and their meanings? | BLACK - man-made features; BLUE- water features; GREEN- vegetation with military significance; BROWN- relief features and elevations; RED- populated areas and main roads (FM 21-26 para 3-5) |
| What other color, besides brown, may be used on a map to show contour lines? | Reddish-brown - used on red-light readable maps. (FM 21-26 para 3-5b) |
| Where does the contour interval note appear on the map? | The contour line interval note appears in the center of the lower margin normally below the scale bars. (FM 21-26 para 3-11) |
| How close will a four-digit grid coordinate locate a point on a map? A six-digit coordinate? An eight-digit coordinate? | 1,000 meters; 100 meters; 10 meters |
| What is a parallels of latitude? | imaginary circles on the surface of the earth paralleling the equator and marking the latitude. (FM 21-26 para 4-2a) |
| What are the meridians of longitude? | imaginary circles on the surface of the earth at right angles to lines of latitude and passing through the poles (FM 21-26 para 4-2b) |
| What is longitude? | The distance east and west of the Prime Meridian (FM 21-26 para 4-2b) |
| What is a military grid system? | A gird (series of straight ines intesecting at right angles) that furnishes the map reader with a system of squares smiliar to the block system of most city streets (FM 21-26 para 4-3) |
| What is meant by the UTM grid system? | The Universal Transverse Mercator grid (FM 21-26 para 4-3a) |
| What is the distance between grid lines on a large scale map? | 1,000 meters (FM 21-26 para 404b) |
| How do you read a map? | To the RIGHT and UP (FM 21-26 para 4-5a) |
| When writing grid coordinates in a continuous series of numbers, does the first half of the total digits represent the right reading or the up reading? | To the right reading. (FM 21-26 para 4-5a) |
| Using the coordinate 1484, which digit represents the North-South grid line? | The number 14 of 1484 represents the North-South grid line. (FM 21-26 para 4-5a) |
| What is another term for scale? | Representative fraction (FM 21-26 para 5-1) |
| What does the scale 1:50,000 mean? | That one unit of measure on the map is equal to 50,000 units of the same measure on the ground (FM 21-26 para 5-1) |
| What is the graphic (bar) scale on a map used for? | A graphic scale is a ruler printed on the map and is used to convert distance on the map to acture ground distances. (FM 21-26 para 5-2) |
| How may Graphic Bar scales might you find on a standard military map? | Three - kilometers, statute miles, and nautical miles (FM 21-26 para 5-2) |
| What unit of direction is used in artillery? | miles (FM 21-26 para 6-1b) |
| What are the three base lines on a map? | True North, Grid North, and Magnetic North (FM 21-26 para 6-2) |
| Which direction of North does the Army use? | Magnetic North when working with a compass. Grid North when working only with a map. (FM 21-26 para 6-2) |
| How is True North usually symbolized on a declination diagram? | By a star. (FM 21-26 para 6-2a) |
| What is an azimuth? | An azimuth is a horizontal angle measure in a clockwise direction from a north base line. (FM 21-26 para 6-3a) |
| What is a back azimuth? | The reverse of azimuth, it may be obtained by adding 180 degress if the azimuth is 180 degrees or less; or substraction if the azimuth is 180 degrees or more. (FM 21-26 para 6-3a) |
| What is the declination diagrams used for? | It shows the angular relationship, represented by prongs, among grid, magnetic, and true north. (FM 21-26 para 6-61, (2)) |
| Define intersection. | The location of an unknown point by successively occupying at least two (preferably three) know positions on the ground and then map sighting on the unknown location. (FM 21-26 para 6-7) |
| Define resection. | The method of locating one's position on a map by determining the grid azimuth to a well-deined location that can be pinpointed on the map. (FM 21-26 para 6-8) |
| What is an overlay? | A clear sheet or transparent paper used to display military operations with em=nemy and friendly troops dispositions. (FM 21-26 para 7-1) |
| What four types of compass does the Army use? | Lensatic compass, Artillery (M2) com[pass, Wrist/pocket compass, and protractor. (FM 21-26 para 9-1) |
| What are the three main parts of the lensatic compass? | The base, cover and lens (FM 21-26 para 9-2) |
| What direction is indicated by a compass reading of 90 degrees? 135 degrees? 315 degrees? | East, South-est and North-west (FM 21-26 para 9-2) |
| Can the lensatic compass be used at night? | Yes, it has two luminous sighting slots or dots used for night navigation. (FM 21-26 para 9-2a) |
| What direction does the arrow on a lensatic compass always point? | The arrow always points to Magnetic North. (FM 21-26 para 9-2b(1)) |
| What kind of dial does a compass have? | A floating dial mounted on a pivot so that it can rotate freely wieh the compass is held level. (FM 21-26 para 9-2b(2)) |
| One click on the bezel ring of the lensatic compass represented how may degrees? | 3 degrees (FM 21-26 para 9-2b(3)) |
| What are the general rules to keep in mind when using a compass? | Detailed inspection of the compass before use; Keep compass away from metal objects and electrical sources; Conduct periodic checks for accuracy on known line of distance; Keep the compass folded when not in use. (FM 21-26 para 9-3) |
| If you use the North Star to find direcftion in the northern hemisphere, what would you use in the southern hemisphere? | The Southern Cross (FM 21-26 para 9-5c(3)) |
| On a military map, the black letter "x" is used to indicate a benchmark, what is the benchmark? | A benchmark is a point of known elevation above mean sea level. (FM 21-26 para 10-31(1) |
| What are the five major terrain features on a military map? | Hill, Saddle, Valley, Ridge, and Depression (FM 21-26 para 10-6) |
| How is a hilltop indicated on a map? | A hilltop on a map is indicated by the inside of the smallest closed circle of a hill. (FM 21-26 para 10-6a(1) |
| How is a saddle indicated on a map? | A saddle is normally represented by a hourglass figure. (FM 21-26 para 1-6a(2)) |
| How is a valley indicated on a map? | A valley on a map is indicated by contour liens forming either a U-shaped or a V-shaped. The closed end of the contour line (U or V) always points upstream or toward high ground. (FM 21-26 para 10-6a(3)) |
| Hos is a ridge indicated on a map? | 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. (FM 21-26 para 10-6a(4)) |
| How is a depression indicated on a map? | A depression on a map is indicated by close contour lines that have tick marks pointing toward the low ground. (FM 21-26 para 10-6a(5)) |
| How are elevation and relief indicated on a map? | Through the use of contour lines (FM 21-26 para 10-2d)) |
| What do contour lines on a map represent? | Contour lines are the most common method of showing relief and elevation on a standard topographic map. (FM 21-26 para 10-2e)) |
| Normally, every fifth contour line is printed heavier and numbered. What is this line called? | Index contour line (FM 21-26 para 1-2e(1)) |
| What are the three methods of orientating a map? | Use of a compass; Use terrain association; Use field expedient method (FM 21-26 para 10-2e(1)) |
| How is an intermittent stream indicated on a map? | Intermittent stream is indicated by broken blue line (FM 21-26 para 10-6a(4)) |
| How is a swamp indicated on a map? | A swamp is indicated on a map by short blue lines in the form of clumps of grass. (FM 21-31 figure 29) |
| What is the symbol of a church? | The symbol of a church is a black cross on a building. (FM 21-31 figure 161) |
| How is a cemetery indicated on a map? | A cemetery on a map is indicated by a broken line box witht he word "cemetery" in black lettering. (FM 21-31 figure 178) |
| On a map overlay of a combat zone, what do the letters FEBA represent? | Forward Edge of the Battel Area (FM 100-5-1 page 1-34) |
| On a map overlay of a combat zone, what do the letters FLOT represent? | Foward Line of Own Troops (FM 100-5-1 page 1-34)) |
| What is the shape of a symbol denoting a military unit, such as a company, battalion, or division? | A rectangle. (FM 100-5-1 page 2-3) |
