What happened after the death of Macdonwald?
According to the Captain with whom King Duncan speaks in Act 1, Scene 2, Macbeth bravely confronts the traitor, Macdonwald, stabbing him in the navel and ripping him open all the way up to his jaw. After Macbeth "unseamed" his foe, Macbeth placed Macdonwald's head on a spike on the battlements so that all can see what becomes of a traitor (1.2.24). However, the Captain continues, Macbeth and Banquo were not done fighting yet: after the battle against Macdonwald's rebel forces was over, the rebels having fled the scene, the king of Norway saw his opportunity to attack when the loyal Scottish forces were tired and weakened. Thus, the king ordered a new attack, with fresh soldiers, on Macbeth's army. Although Macbeth and Banquo were clearly worried, they were victorious in this battle as well.