but he was late in coming and Aremberg's men were mutinous and pressured him to offer battle. The two armies met at Heiligerlee on May 23, where Louis ambushed the Spanish troops. Louis won the army the Battle of Heiligerlee but his younger brother Adolphus fell in the battle. Battle of Jemmingen Although William wanted Louis to retreat to Delfzijl, Louis remained in Groningen, where he met the much smaller army led by Alva himself (2,000 Spaniards against 12,000 Protestants). Louis fell back towards Jemmingen where, on July 21, 1568, the battle raged for three hours until Alva's army drove them over the bridges of the Ems and eventually into the Ems itself. Many drowned trying to cross the river; Louis stripped himself of his heavy armor and was able to swim across to safety. In the end the Dutch rebellion lost 7,000 men at the battle of Jemmingen. Mons After Jemmingen, Louis re-joined his brother William and went back to France where they joined up with Huguenot leader Admiral Coligny. He fought in the battles at Jarnac and Moncontour. At the latter action, he was given command of the right wing of the Huguenot army and, after Coligny was wounded and left the field, he took control of the whole force. He was unable to prevent its defeat, but covered the retreat with his cavalry. Ultimately, he was able to improve their French connections as governor of the principality of Orange. In 1572 Watergeuzen had captured the city of Brielle and claimed it for William. Soon most cities in Holland and Zeeland were in the hands of the rebels and William once again became stadtholder of Holland and Zeeland. Louis quickly raised a small force in France, and entered Hainaut on May 23, capturing Mons. Suddenly Alva found himself held between two enemies with his own army rebellious and unpaid. William tried to relieve his brother at Mons but after an attempt on his life from which he barely managed to escape, he was unable to come to Louis's aid. Alva was now able to bring the surrender of Mons on good terms and on September 19 Louis and his army left Mons with the honors of war. Diverting Alva's attention to Mons had made it possible for the North to strengthen itself and although he may have regained Mons he had lost Holland, which was now strong enough