Teniente de Justicia, Comandante de Armas

Gil Ramirez wrote:

I'm interested in finding more information on what it took to become a "Comandante de Armas". I also cannot find much information on the role of a "Teniente de Justicia". My Great grandfather x6 was both a "Teniente de Justicia" and "Comandante de Armas". My Gg x6 was apparently chosen as "Teniente" by Rosendo Porlier who was under the orders of brigadier Don José de la Cruz comandante general del Ejército de Operaciones de Reserva. http://www.pim.unam.mx/catalogos/hyd/HYDIII/HYDIII012.pdf

My Gg x6 Francisco Castillo, was later killed by insurgents on Oct 18, 1812. A few years later Francisco's son, My Gg X5, Luis Castillo Bonal, would also become Teniente de Justicia for the same town, Zacoalco de Torres, Jalisco, Mexico.

My Gg x5 Luis Castillo Bonal married a Captain's daughter.
My Gg x6 Francisco's daughter married a Teniente de justice from Tepatitlan, Jalisco, Mex.

I have also heard the title "Corregidor" and wondering if this title was just another name for "Teniente de Justicia".
Any information is greatly appreciated..website links, books, authors etc..