After the assassination of King Henry III of France on July 31, 1589, Marshal Jean d'Aumont recognized Henry of Navarre as the rightful successor. Henry of Navarre subsequently became King Henry IV, the first Bourbon king of France. You can read more about this event here.
What military campaigns did Aumont undertake in Burgundy and Brittany?
What were the significant military actions taken by Aumont in Brittany?
What significant role did Aumont play in the siege of Le Mans?
How did Aumont contribute to the defense of Angers?
What position did Navarre appoint Aumont to in 1592?