Having rapidly rebuilt and reorganised his forces after their defeat, the French under Marshal
Nicolas Jean de Dieu Soult launched
an attack towards Pamplona through the passes of
Maya and Roncesvalles. The French force at Roncesvalles consisted of 40,000 men and 8 mountain guns under Generals
Reille and
Clausel. The pass was defended by the British
4th Division commanded by Major-General
Galbraith Lowry Cole and was helped by the Portuguese 4/10 brigade. The French attacked from
Saint-Jean-Pied-de-Port advancing in two columns either side of the pass. Clausel on the Altobiscar and Reille on the Linduz. At around 06:00 the two armies met. The British were badly outnumbered,
John Byng's brigade on the eastern side held Bertrand Clausel's division at bay for three hours before being forced back. By 14:00 Cole brought up three more brigades as reinforcements. However, around 17:00 a dense fog descended over the battlefield, just as the Portuguese 4/10 brigade repelled French attacks in the Val de Baigorry. Cole, despite orders to the contrary, ordered his troops to retreat towards Pamplona. ==Aftermath==