Miguel Ramirez Assassination in 1940's

Hello! ¡Hola! I am doing research to help a friend find his ancestors from
Mexico. To start he knows his great-grandfather, Miguel Ramirez, was
assassinated in Ayutla, Queretaro De Arteaga, Mexico, in the 1940's and was
the Chief of Arms at that time in Ayutla. Also he knows he served in a war
in Mexico prior to living in Ayutla, so we hoped there could be information
in Jalisco, Zacatecas, and/or Aguascalientes regarding his service in the
war. We would appreciate any advise or assistance in obtaining information
about Miguel Ramirez.

Thank you!
Gracias!