In July 1813 the British advance continued into the Pyrenees, with the French leaving garrisons at San Sebastián and Pamplona, and the bulk of the army retreating into France to be reorganized by Soult. Soult launched a double pronged attack into Spain on 25 July. After marching and counter-marching between Pamplona and Mt Achiola, the regiment, with the rest of the Inglis's brigade, attacked two battalions of Clausel's flank guard at Ostiz on 30 July, driving the French by bayonet down into the valley, as Soult attempted to join d'Erlon after being beaten off from Pamplona. The next day as Clausel continued north, the brigade attacked the French on a steep hill near Urroz. After sequential volleys from the 82nd and 51st, the 68th fired, and accompanied by the Chasseurs Britanniques, drove the French from the hill. On 2 August the 7th Division, with the 4th and part of the Light Division, had the luck to attack the weak centre of the remains of Soult's Corps on the heights above Etxalar. At the end of the month, Soult again attempted to relieve San Sebastián, using two divisions in a diversionary attack across the river Bidasoa around Vera. Inglis's brigade arrived on 31 August to be slowly pushed back up the side of the valley by the greater numbers of French, until learning of the failure of the main attack the French retired.