In 1809–10, the British occupied the southernmost islands, leaving only Corfu, Paxoi, and the mainland exclave of Parga in French hands.

[1] On 20 August, French troops landed on Corfu, followed three days later by General César Berthier, who received control of the islands from the Russian admiral Dmitry Senyavin.

Finally, on 1 September, contrary to his instructions to preserve the Islands' constitution, Berthier as Governor-General declared the annexation of the Septinsular Republic to France.

[2] In November 1807, Napoleon regulated the administration of the new French possessions: the internal structure of the Republic was retained largely along the lines of the 1803 Constitution,[4][2] including the Ionian Senate (although its members were now appointed rather than elected), but the administration was overseen by a Governor-General and an Imperial Commissioner, with Julien Bessières the first to occupy the latter post.

[2] Indeed, in October 1809 a British expeditionary force under Brigadier John Oswald arrived at Zakynthos, and issued a proclamation promising to restore the Ionian Islands' liberty and independence.

Below is the list of units which were formed within the islands: Finally, Paxoi was occupied by the British in early 1813, followed by Parga on 22 March 1814, after a popular uprising evicted the French.

[15] The Ionian Senate, declaring that the Septinsular Republic had been suspended but not abolished under the French and British occupations, tried to advocate for the independence of the Islands in the Congress of Vienna, but Campbell refused to accept this view, holding that the Republic had ceased to exist after Tilsit, and regarding the French-appointed Senate as not representative of the Ionian people.