From 15 to 17 October, Moncey, launched a broad front offensive from the Baztan Valley and the Roncevaux Pass to the south toward Pamplona. The Battle of Orbaitzeta saw clashes at Mezkiritz (Mezquiriz), Orbaitzeta, Lekunberri and Villanueva (Hiriberri). The 46,000-man French army drove back 13,000 Spanish troops under the command of Pedro Téllez-Girón, 9th Duke of Osuna, with 4,000 casualties and the loss of 50 cannon. French losses are unknown. The arms foundries at Orbaitzeta and Eugi, as well as the Spanish navy's mast store at Irati, fell to the French. However, the onset of winter weather and the outbreak of disease caused operations to be suspended for the year. A final clash occurred at Bergara on 7 November in which the French inflicted losses of 150 killed and 200 men and one cannon captured on a 4,000-man division led by Cayetano Pignatelli, 3rd Marquis of Rubí. The town was sacked, but a detachment of the territorial militia, led by Gabriel Mendizabal, who was to be promoted to general during the Peninsular War, managed to recapture it.