North-Seeking Arrow. To allow proper orientation, a north-seeking arrow must be
located somewhere on the overlay. North can be shown by using either the grid or the
magnetic north. When grid north (GN) is used, indicate such by marking the arrow as GN.
Indicate magnetic north (MN) by marking the arrow as MN. GN is most commonly used on
overlays because of convenience (Figure 1-3).
Figure 1-3. North-Seeking Arrow
Title Block. To identify the person performing a reconnaissance, a title block
(Figure 1-4) is placed on the overlay. The title block will include his name, rank, SSN, and
unit; the date time group (DTG); the map name; the map edition; the map scale; and
remarks. The location of the title block on the overlay will depend on the space available.
Figure 1-4. Title Block
Route Classification Formula. A route classification formula is the last required item
on the overlay. The route classification formula is located directly above the title block and
briefly describes a specific route. The formula is made up of a series of numbers and letters
that express (in a standard sequence) the route's width, type, lowest military load
classification (MLC), overhead clearance, any obstructions to traffic flow, and special
conditions along the route (Figure 1-5). Determining the route classification formula is
discussed in Lesson 2.
Figure 1-5. Route Classification Formula