His government paid great attention to the regulation and punishment of crimes in New Mexico, which were especially abundant in Albuquerque and Santa Fe.

In January 1768, Mendinueta was named a captain, so he led the Spanish troops that would participate in a military campaign against indigenous peoples.

[2] In the late 1760s, the Comanches traveled to the Sangre de Cristo Mountains, north of Taos, where, together with the Utes, they attacked the San Luis Valley, the Rio Grande area, and Santa Fe.

To defend those lands, Mendinueta ordered build the Cerro de San Antonio in a zone located in the north of Ojo Caliente, in May 1768.

However, according to Nicolas de Lafona, Santa Fe (which maintained the largest Spanish population, as it was one of the most important cities of the province), was attacked during the whole colonial period.

In addition, Madinueta could not stage a major military campaign against the Comanches and they continued to attack almost every day northern of the province.

The treaty forbade Spaniards from moving or traveling into Comanche territory if they didn't attack the Rio Grande Valley again.

The peace treaty favored Mendinuela's allowing the Comanches to visit the Taos fair, where their presences had been prohibited in 1761 due to conflicts they had with the Spaniards.

A civilian militia was built at El Paso del Norte and the troops of this presidio were placed at Carrizal.