In 1524, he drove the French under Bonnivet from Lombardy, and fought at the Battle of Pavia. The emperor gave Charles command of a mixed Spanish–German army (which included a number of Lutherans) sent to chastise Pope Clement VII. He neglected to supply this army with money or food, and Charles was only able to keep it together by promises of loot. Though Clement arranged a truce with the emperor, the army continued its advance, reaching Rome in May 1527. The death of Charles—the artist and goldsmith Benvenuto Cellini claimed that he fired the shot that killed him—outside the walls removed the last restraints from the army, which resulted in the sack of Rome.