He was sent into the Vendée in May 1793, where he acted as deputy to Charles-Philippe Ronsin at the siege of the état-major at Saumur, in a mission to ensure the army fighting against the revolt there was well supplied. On his return to Paris, in a long "Rapport sur la politique de la Vendée fait au comité de Salut Public", he explained the reasons for setbacks to Ronsin's strategy in the Vendée and defended General Rossignol, contributing to his rehabilitation.