AskHistorians

Even that isn't generally enough to subdue guerilla warfare. If it was, there would no longer be a 'Kurdish Problem'.

The actual way to work against it to offer a peace on acceptable (not necessarily favorable) terms to the partisans, that seems in good faith. Guerilla warfare rarely, if ever, peters out because of sustained military pressure. Military pressure can force them to the negotiating table, but if the occupying power has an insane position like "Kurds aren't real" or "We don't negotiate with terrorists", that won't help.