What is "coronels"

Usage examples of "coronels".

They don't like each other, and I'm afraid that one of your Argentine coronels is going to decide that if they get in a war with Brazil, Germany will have to help them.

Antonio said as he picked up a silver cof­feepot and refilled el Coronels cup.

I had in mind officers, majors or teniente coronels, who are mem­bers of Grupo de Oficiales Unidos.