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 RoadsBlue: DuhBrown: All Relief Features- Contour lines on Old Maps-

Cultivated Land on Red-Light Readable MapsGreen: VegetationRed: Major Roads, Built Up Areas, Special Features on Old

MapsRed-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 Compass2. Identify Two Or Three Distant Locations on the Ground and

Mark them on the Map3. Shoot a Magnetic Azimuth to the Distant Locations4. Convert the Magnetic Azimuths to Grid Azimuths and

compute the Back Azimuths5. 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

Compass2. Shoot an Magnetic Azimuth from both Known Locations to

the Unknown Location3. Draw a Line from Both Known Locations to the Unknown

Location Along the Azimuth4. The Intersection of the Lines is the Location’s Coordinates

Intersection

QUESTIONS?