[1] On 29 July 1810, Taboada, having taken command of Echevarria's brigade based at Puebla de Sanabria, numbering some 200 men,[2] was driven from the town by the 5,000 French troops led by General Serras, who had set out from his headquarters at Benavente with the intention of threatening the frontier of the Tras-os-Montes, in the north of Portugal.
But instead of advancing, Serras turned back, left some 400[1]–600[3] troops (a battalion of the 2nd Swiss Regiment and a squadron of horse) at Puebla de Sanabria, and withdrew to Zamora.
The French troops finally surrendered some six days later, about 20 officers and 350 men, all that remained of the original force, being taken prisoners.
Serras, on learning of the attack, hurried back but found Puebla de Sanabria empty, for the allies forces had made off with their prisoners and taken to the mountains.
[3] On 23 June 1811, Taboada's troops defeated the French general Jean-André Valletaux, who was killed, at the Battle of Cogorderos.