Three times during the spring of 1794 the French armies attempted to cross the Sambre in the face of resistance by First Coalition forces. The French were turned back at Grandreng on 13 May, Erquelinnes on 24 May and Gosselies on 3 June. On the last occasion the French were able to briefly lay siege to the fortress of Charleroi. Meanwhile, Jourdan was detached from the Army of the Moselle with four divisions and moved toward the fighting on the Sambre. After arriving with large reinforcements on 4 June, Jourdan assumed control of the Army of the Ardennes and the right wing of the Army of the North. On 12 June, the French crossed the Sambre and laid siege to Charleroi for the second time. On the 16th, the Prince of Orange attacked and broke the French right flank, forcing Jourdan to lift the siege and withdraw south of the Sambre. The final showdown along the Sambre would come at the Battle of Fleurus on 26 June 1794.