Austrians directed by Prince Albert of Saxony, Duke of Teschen occupy the area after having taken Roubaix, Tourcoing and Lannoy. However, they raise the Siege of Lille on 8 October, vis-a-vis the impossibility of seizing the city. The Mark River separated the republican troops stationed in Flers, Annappes and Ascq, and the Austrians at the end of 1792 until the beginning of 1794. The coalition formed against France invaded the village in 1794, but the victory in the Battle of Tourcoing, on 18 May 1794, push back the enemy. Under the Reign of Terror, the goods of the emigrants are confiscated. In the same way, silverware and objects of worship of Saint-Sebastien church are inventoried, sent to Lille and are recovered by the State. The church will even be sold on 29 September 1798 with the bidding at the same time as those of Ascq and of Flers-lez-Lille, but will not be demolished. After a Legal settlement, it will be taken again by the monks. From 1800, the mayors are named by prefect. The first will be P.J. Mahieu for Annappes.