 On 1 November 1758, while still under the protection of Madame de Pompadour, and with the support of Choiseul and the marshal of Belle Isle, he was named secretary of state to the Navy.Delegating the planning of the landing in England to the secretary of state for war, he devoted himself to reforming the administration.He was instrumental in blocking the plans of Belle-Isle, his former patron, to launch an invasion of the Channel Islands.