 Complete the following phrase:  In September, Charles V closed the Diet of Worms in order to lead, for the first time in his life, a military campaign, commanding the Imperials against the invading forces of Francis I in the Low Countries. He successfully defended Flanders and won a battle at Tournai, while the Papal-Imperial army led by Prospero Colonna drove the French out of Milan, installed Francesco II Sforza to the Ducal throne, and restored the provinces of Parma and Piacenza to the Papal States. Those successes were confirmed with the 