had reorganised and in the early afternoon, found that the Germans had forestalled another advance, by pushing the V Corps in the centre back for , which led to the rest of the army falling back level. In the Fourth Army area, the 33rd Division of XVII Corps had been routed and the rest of the corps had withdrawn during the night of The 5th Colonial Brigade withdrew from Neufchâteau before dawn on 23 August, exposing the right flank of XII Corps, which also fell back. By the end of 23 August the survivors of the Third and Fourth armies were back to their jumping-off positions except for the XI and IX corps on the northern flank. Sambre Battle of Charleroi, 21–23 August On 19 August the Fifth Army began to move into the angle of the Meuse and Sambre rivers close to Namur, which required a march of up to and took the army far beyond the left flank of the Fourth Army. Opposite the French were the 2nd and 3rd armies, with against the divisions. The I Corps held the west bank of the Meuse from Givet to Namur, X Corps faced north-west along the Sambre, with the III Corps to the west opposite Charleroi and the XVIII Corps further to the left. French cavalry on the left flank skirmished with German cavalry on 20 August and next day Joffre ordered the Fifth Army to advance, with the BEF on the left to find and attack the German forces west of the Meuse. Before the French could cross the Sambre a German attack began between Namur and Charleroi and captured the Sambre bridges. On 22 August the French attacked to retake them but were repulsed in the centre. The I Corps was ordered to move north to Namur, which left of the Meuse defended by one reserve division and the 3rd Army was able to cross north of Givet. The I Corps drove part of the 3rd Army back across the river on 23 August but was not able to recapture Dinant. At the same time the BEF was attacked by the 1st Army at Mons. With the evacuation of Namur and news of the French Fourth Army retreating from the Ardennes, Lanrezac ordered a withdrawal around midnight towards Givet, which was the final French manoeuvre of the Battle of the Frontiers. Battle of Mons, 23 August On