Fugleman (from the German Flügelmann, the man on the Flügel or wing; wingman), properly a military term for a soldier who is selected to act as guide, and posted generally on the flanks with the duty of directing the march in the required line, or of giving the time, etc., to the remainder of the unit, which conforms to his movements, in any military exercise.
A wingman's primary function is to ensure the smooth and coordinated movement of a unit within a formation, often by providing instructions on direction, timing, and positioning.