Even before he had given battle the Duke of Richelieu had set out from Versailles to supersede him in his command.
The conquest of Port Mahon had thrown around Richelieu a halo of glory; in Germany, he reaped the fruits of Marshal d'Estrees' successes; the Electorate of Hanover was entirely occupied; all the towns opened their gates; Hesse Cassel, Brunswick, the duchies of Verden and of Bremen met with the same fate.

The marshal levied on all the conquered countries heavy contributions, of which he pocketed a considerable portion.

His soldiers called him "Father La Maraude." The pavilion of Hanover at Paris was built out of the spoils of Germany.

Meanwhile, the Duke of Cumberland, who had taken refuge in the marshes at the mouth of the Elbe, under the protection of English vessels, was demanding to capitulate; his offers were lightly accepted.

On the 8th of September, through the agency of Count Lynar, minister of the King of Denmark, the Duke of Cumberland and the marshal signed at the advanced posts of the French army the famous convention of Closter-Severn.