He was ordered by the Mexican government to make attempts at peace with the hostile Native American tribes of the north, the Comanches and the Lipan Apaches.

Appointed to the mounted militia upon his return, he successfully led a peace treaty delegation of Lipan Apache to Mexico City later in 1822.

Ruiz returned to Bexar in 1828, where he commanded the famed Second Flying Company of San Carlos de Parras, which established Fort Tenoxtitlán[2] in 1830.

In the fall of 1828, Ruiz led the Mier y Teran group of 30 Mexican soldiers and commission members, including naturalist Jean-Louis Berlandier, on a bear and buffalo hunt on open lands northwest of San Antonio, with the cooperation of local Comanche leaders Reyuna and El Ronca.

During the revolution, he was an outspoken supporter of independence, and he eloquently wrote to his family, "Under no circumstance take sides against the Texans, for only God will return the territory of Texas to the Mexican government.