 Complete the following phrase:  Murat established a plan of conquest, sending two large armies to attack pockets of pro-Ferdid resistance. One army secured the route between Madrid and Vitoria and besieged Zaragoza, Girona, and Valencia. The other, sent south to Andalusia, sacked Córdoba. Instead of proceeding to Cádiz as planned, General Dupont was ordered to march back to Madrid, but was defeated by General Castaños at 