Sled, Not to argue whether guerrilla style tactics have a place, can win a battle or make a contribution in a war effort. We all know they do. Most of the wars you list including our own revolutionary war were won because of large troop engagements. Guerrillas would never have driven Cornwallis from Yorktown. It took a big army and the French navy to pull It off.
My basic point is, terror although frieghtening will not win a war. In a fight I might be scared, but I might be more pissed off then scared at the same time.