Davout was punished by the Bourbons for his support of, and testifying for, Ney at Ney's trial.

Davout had also aided and warned the officers who were on the proscription list, drawn up by Fouche (and who was congratulated on the list by Talleyrand, the latter remarking that it included all of Fouche's friends-'We must give the Duke of Otranto credit for one thing, he did not forget any of his friends in drawing up the list').

Three weeks after Ney's trial, Davout was exiled to Louviers. His military pay was suspended on 27 October 1815 which put the Davout's in serious financial difficulties. His exile was ended on 21 June 1816 and he was allowed to return to his home at Savigny. He was still forbidden to enter Paris. The government also ordered that he be put under police surveillance.

On 27 August 1817 Louis restored his rank and pay, and actually allowed him 18 months of back pay.

On 31 August 1817 Davout finally swore allegiance to Louis XVIII.

On 11 February Davout was named a knight in the Ordre royal et militaire de Saint-Louis and he was named a Peer of France on 5 March that year.

See Gallagher's The Iron Marshal, 330-341