aerial artillery observer
повітряний артилерійський спостерігач (коректувальник)
повітряний артилерійський спостерігач (коректувальник)
forward observer (FO), forward observation officer; (artillery) observer / spotter
main artillery (major caliber artillery)
United Nations Iran-Iraq Military Observer Group (UNIIMOG)
United Nations Military Observer Group in India and Pakistan (UNMOGIP)
United Nations military observer mission
United Nations Observer Group in Central America (ONUCA)
United Nations Observer Mission in Angola (MONUA)
United Nations Observer Mission in Bougainville (UNOMB)
United Nations Observer Mission in El Salvador (UNOSAL / фр. ONUSAL)