Ejército Trigarante
On 27 September 1821, the Army of the Three Guarantees entered Mexico City, forming a column headed by Agustín de Iturbide. Among the officers who entered the city that day were Pedro Celestino Negrete, Vicente Guerrero, Nicolás Bravo, Anastasio Bustamante, Melchor Múzquiz, José Joaquín de Herrera, Manuel Mier y Terán, Luis Quintanar, Miguel Barragán, Vicente Filisola, Antonio López de Santa Anna and Guadalupe Victoria. On 28 September 1821, the Declaration of Independence of the Mexican Empire was signed.