When La-Peña was driven back upon Taranzona, the four divisions of the left wing commenced an orderly retreat towards Borja, but some cavalry, detached by Ney from the side of Soria, coming in sight, the Spaniards got into confusion; a magazine blew up, and in the midst of the disorder cries of treason were heard, the columns dissolved in a few moments, the road to Borja was covered with a disorganised multitude; and so ended the celebrated battle of Tudela, in which forty thousand men were beaten and dispersed by an effort that, being in itself neither very vigorous nor well sustained, was nevertheless sufficient for its purpose, and demonstrative of the incapacity of Spanish generals, and the want of steadiness in Spanish soldiers. [Sidenote: Eleventh Bulletin. Victoires et Conquêtes.] Several thousand prisoners, thirty pieces of artillery, and all the ammunition and baggage, fell into the hands of the French, who rated the killed and wounded very high. The total loss may be estimated at eight or nine thousand men. Fifteen thousand escaped to Zaragoza; a detachment of two thousand, under the Conde de Cartoajal and general Lille, left in the mountains of Nalda, were cut off by the result of the action, and two divisions, whose numbers were increased by fugitives from the others, were rallied at Calatayud on the 25th, but they were half starved and mutinous. [Sidenote: Castaños’ Account of the Battle of Tudela, and Vindication.] At Calatayud, Castaños received two despatches from the central junta, virtually restoring him to the command. For the first empowered him to unite the Aragonese army with his own; and the second, informing him that St. Juan was at the Somosierra, required his co-operation with that general to protect the capital. The battle of Tudela disposed of the first despatch, the second induced Castaños to march by Siguenza upon Madrid. [Sidenote: S. Journal of Operations, MS.] [Sidenote: Eleventh Bulletin.] In the meantime, Napoleon, recalling the greatest part of his cavalry from the open country of Castille, left seven or eight thousand men in Burgos, and fixed his head-quarters at Aranda de Douero on the 23d. From the difficulty of transmitting despatches through a country in a state of insurrection, intelligence of the victory at Tudela only reached him on the 26th. He was exceedingly discontented that Castaños should have escaped the hands of Ney. That marshal had been instructed to reach Soria by the 21st, to remain there until Lasnes should be in front of the Spaniards, and then to pass by Agreda, and intercept the retreat of the latter.