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A line with echelon marks dividing areas of responsibility.
Also known as: Unit boundary marking, Area of responsibility line
In NATO joint military symbology a boundary is a line dividing areas of responsibility between units, marked with the echelon symbols of the formations it separates.
Divides areas of responsibility between adjacent units, carrying the echelon marks of the formations concerned.
Contexts: Maps
Reuses the echelon marks from the unit symbols, so the same notation identifies both a unit's size and the boundaries it owns.
Contexts: Maps
A line broken at intervals by the echelon marks of the units on either side, drawn across the map.