On October 25, 1822, Iturbide named Santa Anna Commander of the Province of Veracruz,[1] during which time he was in favor of the Empire.
But he changed his mind when Iturbide dissolved the Constituent Congress and tried to remove him from his post.
On December 2, 1822, Santa Anna ruled against the empire of Iturbide and the republic for supporting Guadalupe Victoria.
In the new document it noted that a congress would meet to decide a form of government to continue the principles of religion, independence, and unity.
With this plan, Santa Anna lost battles at the beginning of the uprising, but with the proclamation of the Plan of Casa Mata and support of other rebel leaders defeat the forces of Iturbide was encouraged.