The Battle of Boulogne was a significant military engagement that took place in 1544 during the Italian Wars. It involved the forces of the Kingdom of England, led by King Henry VIII, and the Kingdom of France, commanded by Francis I. The battle was part of a larger conflict over control of territories in Italy and France. The English forces successfully captured the port city of Boulogne, which was strategically important for trade and military operations. This victory allowed England to establish a foothold in France, although the city was later returned to the French in 1550 as part of a peace treaty.