Calvera spares the gunmen's lives, believing that they have learned that the simple farmers are not worth defending; he also fears reprisals from gunfighter friends of theirs from north of the border.
Calvera spares the gunmen's lives. The simple farmers are not worth defending. This was what Calvera was believing. They have learned this. He also fears reprisals from gunfighter friends of theirs from north of the border.