Battle of Bouvines
In 1213, Henry faced his nephew Henry I, Duke of Brabant at the battle of Steppes. The Duke of Brabant's army broke and ran. Henry later supported Otto of Brunswick over Philip of Swabia as German king and imperial claimant. He fought at the Battle of Bouvines in 1214 for Otto of Brunswick, while his son Waleran sided with Philip II of France.