Definition from Wiktionary, the free dictionary
- To watch over.
- (military) The supervision of one unit or vehicle by another while the supervised unit is firing or moving.
2007 September 11, Michael R. Gordon, “Petraeus Sees Bigger Role in Protecting Iraqi Civilians”, in New York Times:
- 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.