Who was the Grand Duke of Alba and Iron Duke in the Netherlands that defeated William the Silent's invading army?
Battle of Jodoigne The Battle of Jodoigne was fought October 20th 1568 between Spanish and Dutch forces. The Spanish under Fernando Álvarez de Toledo, 3rd Duke of Alba destroyed the rear guard of William the Silent's invading army, forcing him to abandon his invasion of the Netherlands and to retreat into Germany.
Siege of Groenlo (1597) The Siege of Groenlo was a siege of Groenlo during the Eighty Years' War and the Anglo–Spanish War by a Dutch and English army led by Maurice of Nassau after it had followed an unsuccessful siege by Maurice in 1595.