Noun

(-)

(military) The supervision of one unit or vehicle by another while the supervised unit is firing or moving.

*{{quote-news, year=2007, date=September 11, author=Michael R. Gordon, title=Petraeus Sees Bigger Role in Protecting Iraqi Civilians, work=New York Times citation

, passage=At a further and undefined point in the future, the American force would shrink to about seven and later five brigades — all involved in overwatch missions. }}