A topographic sketch is prepared so the person receiving it can plot on a map your scouting position or the information you wish to convey. To prepare a topographic sketch, you need a map similar to one your commander has in his possession.

1. Read the azimuth from your position to the position of an object you can easily see and describe.

2. Estimate the distance, using the most accurate means available.

3. Draw the azimuth line from you to the object. Then mark the azimuth above this line and the distance below this line.

4. At the proper end of the line, indicate the object. At the other end of the line, indicate your own position.

5. Find the azimuth and the distance to some other point on the map or to the position of the command post.

6. Draw this line on the sketch. Then indicate the azimuth, the distance, and the object to which it is drawn.

7. Finally, sign the sketch.

MAP OVERLAYS

A map overlay is generally used to send back reconnaissance information. The overlay is made by placing apiece of transparent paper on a map, marking the location, and numbering the corners of the grid squares. At least two corners should be marked or crossed. These crosses are called REGISTER MARKS and are used to orient the overlay on a map later on. After the register marks have been made, you only need to write the information that is to be sent back to the command post. When the overlay is receive&it will be placed on a similar map and oriented by its register marks and the information you recorded.