On 9 November 1808, Marshal Nicolas Soult replaced Bessières in command of the II Corps with Mouton's troops designated the 1st Division. The next day, Soult crushed an outclassed Spanish army at the Battle of Burgos. Seeing the Spanish deployed in a bad position, the French marshal placed Édouard Jean Baptiste Milhaud's dragoon division on the left, Antoine Lasalle's light cavalry in the center, and Mouton's infantry on the right. Not bothering to wait for divisions under Pierre Hugues Victoire Merle and Jean Pierre François Bonet to arrive, Soult ordered an attack. After a cavalry charge collapsed the Spanish right wing, Lasalle's horsemen swung to take the left wing in flank while Mouton's foot soldiers mounted a frontal attack. In the subsequent slaughter, French losses were probably less than 200 while the Spanish may have lost 2,500 killed and wounded and another 900 captured. The same regiments fought under Merle at the Battle of Corunna on 16 January 1809, but Rey was no longer with the division by that time. The brigadiers were Reynaud, Jacques Thomas Sarrut, and Jean Guillaume Barthélemy Thomières.