 Complete the following phrase:  In 1731 Alexander Colville, 7th Lord Colville of Culross joined the Navy. He soon obtained his own command and by in 1744 became captain of HMS Leopard 1741, a fifty gun frigate. He was later promoted to commodore and obtained command of HMS Northumberland 1750 and sailed to America in 1755 during the Seven Years War. In 1759 Colville forced the French to raise the 