 Complete the following phrase:  Marchand evacuated his headquarters at Salamanca and retired north to Toro where François Étienne de Kellermann joined him with a dragoon division and some infantry. With Kellermann in overall command, the French recovered Salamanca. Dropping off Marchand and the VI Corps, Kellermann returned north to suppress new guerilla attacks. At this, Del Parque promptly advanced with superior forces, compelling Marchand to abandon Salamanca again. Learning that the main Spanish army had been smashed at the Battle of Ocana and fearing retribution, del Parque withdrew toward his mountain refuge. Meanwhile, Kellermann reappeared with his cavalry, joined Marchand, and launched a pursuit. The French cavalry found del Parque astride a river crossing at Alba de Tormes and mounted a devastating attack. On 28 November, Kellermann routed del Parque at the 