Map Training Class
LTCOL Cassady
Tasks
Instruct Personnel on the following:
-Identify Topographic Symbols on a Military Map
-Identify Terrain Features on a Map
-Determine a Magnetic Azimuth Using a Lensatic Compass
-Orient a Map Using a Lensatic Compass
-Locate an Unknown Point on a Map and on the Ground By
Intersection
- Locate an Unknown Point on a Map and on the Ground By
Resection
Conditions
Given: Highly Motivated Cadets, Lensatic Compass, Protractors
1:50,000 Scale Maps, and Mandeville high School grounds
for Practical Exercises
Standard
All Personnel Will be trained and confident in the use of a
Military Map and Lensatic Compass For Finding Their
Current Location and Determining What Resources are
Nearby.
Safety Considerations
- Weather Concerns
- Proper Use of the Equipment
- Reactions for Getting Lost
Identify Topographic Symbols
Six Basic Colors:
Black: Cultural (Man-Made) Features Other Than Roads
Blue: Duh
Brown: All Relief Features- Contour lines on Old MapsCultivated Land on Red-Light Readable Maps
Green: Vegetation
Red: Major Roads, Built Up Areas, Special Features on Old
Maps
Red-Brown: All Relief Features and Main Roads on Red-Light
Readable Maps
Any Additional Information Will Be Contained in the Map
Legend
Terrain Features
Five Major:
Hill, Valley, Ridge, Saddle, Depression
Three Minor:
Draw, Spur, Cliff
Two Supplemental:
Cut, Fill
Hill
Valley
Ridge
Saddle
Depression
Spur
Draw
Cliff
Orient a Map Using a Compass
Place the Map on the Ground or Any Flat Level Surface
Using the Magnetic North Arrow Found in the Map Margin,
Rotate the Map and Compass Until All are Pointing Towards
the Top Index Line on the Compass
Practical Exercise
Use a Map and Lensatic Compass to Orient a Map
Using Terrain Association Orient a Map
Determine an Azimuth Using a
Lensatic Compass
Definition: A Horizontal Angle Measured Clockwise From a
North Base Line.
Use Cheek Method to Determine an Azimuth
Back Azimuth: To Determine the Back Azimuth, add 180
Degrees if the Azimuth is 180 Degrees or Less, subtract 180
Degrees if the Azimuth is 180 Degrees or More
Practical Exercise
Take Some Time to Get Comfortable Shooting an Azimuth With
the Lensatic Compass and Computing a Back Azimuth
Using a Map and Protractor Determine some Azimuths and Back
Azimuths
Practice Converting Compass and Grid Azimuths
Resection
A Way to Locate One’s Position on a Map by Using at Least Two
Well-Defined Locations
Steps:
1. Orient the Map Using a Compass
2. Identify Two Or Three Distant Locations on the Ground and
Mark them on the Map
3. Shoot a Magnetic Azimuth to the Distant Locations
4. Convert the Magnetic Azimuths to Grid Azimuths and
compute the Back Azimuths
5. Draw a Line along the Back Azimuth from the Distant
Location towards your Unknown Location.
6. The Intersection of the Lines is your Location
Practical Exercise
Determine Your Present Location Using the Maps of the
Waegwan Area Provided, a Protractor, and a Lensatic Compass
Intersection
Intersection is Essentially the Same as Resection Just Backwards
Using Two Known Locations you Will Determine the Location of
an Unknown Area
Steps:
1. Given two Known Locations, an Oriented Map, and a
Compass
2. Shoot an Magnetic Azimuth from both Known Locations to the
Unknown Location
3. Draw a Line from Both Known Locations to the Unknown
Location Along the Azimuth
4. The Intersection of the Lines is the Location’s Coordinates
Intersection
QUESTIONS?