What are the 3 most important events in act 5 of macbeth. (3 sentence limit)

Macbeth kills young Siward in battle and finds out that Macduff was not born of a woman. A Scottish army is heading towards Birnam Wood to join Malcolm and his English army. Malcolm arrives with the Scottish and English troops at Dunsinane. Macduff kills Macbeth and cuts off his head.