'we only know war lasts, rain soaks, and clouds sag stormy' the fact that they 'only know' shows that war has consumed them. 'war lasts' shows that the only certainty they have is that war is something that is consistent and persistent.''rain soaks' shows that war is a destructive force that destroys everything in its path. 'clouds sag' shows that war is a force that is unpredictable and uncontrollable.