On 18 March 1793, the Allies under Prince Coburg defeated the French at the Battle of Neerwinden. Very quickly the French armies withdrew from the Austrian Netherlands and the Dutch Republic and reassembled behind the French frontier. The French commander Charles François Dumouriez briefly attempted to use the army to overthrow the National Convention. However, the coup failed and Dumouriez defected to Habsburg Austria on 5 April along with several generals including Louis Philippe, Duke of Chartres and Jean-Baptiste Cyrus de Valence. Dumouriez had turned over the French War Minister, Pierre de Ruel, marquis de Beurnonville to the Austrians, so that the office was henceforth controlled by the extreme Jacobin faction. After Dumouriez's treason, French generals in the field were regarded with suspicion and were often denounced by the all-powerful Representatives on Mission or agents of the War Office.