BENGHAZI: British Apache and French attack helicopters struck targets Saturday for the first time in NATO's campaign in Libya, hitting Muammar Gaddafi's troops near a key coastal oil city. The action was a significant step-up in NATO's operations and a major boost to Libyan rebels, just a day after rebel fighters forced government troops from three western towns and broke the siege of a fourth in yet another erosion of Gaddafi's power since the eruption of the uprising to end his 42-year rule. NATO said the helicopters struck troops trying to hide in populated areas, military vehicles and equipment. Lt. Gen. Charles Bouchard, commander of the Libya operation, said the engagement “demonstrates the unique capabilities brought to bear by attack helicopters.” Separately from the helicopters, Royal Air Force aircraft destroyed another military installation near Brega and two ammunition bunkers at the large Waddan depot in central Libya. Meanwhile, British Foreign Secretary William Hague and International Development Secretary Andrew Mitchell are visiting Benghazi in Libya to meet with rebels. British officials say the two will meet with leaders of the National Transitional Council including Chairman Abdul Jalil. They are also expected to meet with citizens. Hague said before the Saturday visit that it is meant to show support for citizens fighting Gaddafi's rule Hague is one of the highest-ranking officials to visit rebel-held territory.