The book might also be titled The Lost Command.
They made a movie about it.
Anthony Quinn was Raspeguy.
“Friend, do you hear the sound of the Raven in the plains?
Friend, do you hear the sound of your country in chains?”
I see that the terrorists at the concert in France cut off some of their male victim’s genitals and stuffed them in the victims mouths.
Larteguy wrote about that decades ago.
Read about what “The Lizards” did in response.
It’s fiction, but I think it’s fiction based on real events.