History of Corsica dislodge Paoli were futile, in 1764 by secret treaty Genoa sold Corsica to the Duc de Choiseul, then minister of the French Navy, who bought it on behalf of the crown. On the quiet, French troops gradually replaced Genoese in the citadels. In 1768, after preparations had been made, an open treaty with Genoa ceded Corsica to France in perpetuity with no possibility of retraction and the Duc appointed a Corsican supporter, Buttafuoco, as administrator. The island rose in revolt. Paoli fought a guerrilla war against fresh French troops under their commander, Comte de Marbeuf, but was defeated in the
Invasion of Corsica (1794) turned his attention to Corsica. Combining naval bombardments with amphibious landings of British soldiers and marines, and supported by Corsican irregulars, the British forces attacked the defences of San Fiorenzo, forcing the French to abandon the town and retreat to Bastia. Hood then led a force around the island and laid siege to the town, which surrendered after 37 days of blockade. This victory was sufficient for the Corsican people, through Paoli, to pledge allegiance to Britain. British reinforcements then laid siege to the last French-held fortress on the island, at Calvi, which was bombarded for two months, finally surrendering