On the 5th of May General Ignacio Zaragoza ordered them to march from Atlixco to Izúcar de Matamoros to fill in for the departure of reactionist General Leonardo Márquez and prevent him from joining the French. The next morning, Tomás O'Horán Escudero and Antonio Carbajal brigades of the Eastern Army entered Puebla. In the evening, arrived the brigade Antillón, composed of the Guanajuato National Guard sent by the government, to strengthen the body of the Eastern Army. On the 7th The French was still residing at Amalucan Zaragoza ordered the brigade of Carbajal and Miguel Ameche's cavalry to march to Amozoc taking the rear-guard of the French Army. However this plan was doublecrossed by Ignacio Echegaray, from the fort San Carlos de Perote, who imprisoned his commander Francisco Paz and de