This Union and its Government must be sustained, at any and every cost; to sustain it, we must war upon and destroy the organized rebel forces,—must cut off their supplies, destroy their communications . . . [and] produce among the people of Georgia a thorough conviction of the personal misery which attends war, and the utter helplessness and inability of their “rulers,” State or Confederate, to protect them. . . . If that terror and grief and even want shall help to paralyze their husbands and fathers who are fighting us . . . it is mercy in the end.