General Gage, stationed in Boston, was ordered by King George III to arrest Samuel Adams and John Hancock. The British marched on Lexington, where they believed the colonials had a cache of weapons. The colonial militias, warned beforehand by Paul Revere and William Dawes, attempeted to block the progress of the troops and were fired on by the British at Lexington. The British continued to Concord, where they believed Adams and Hancock were hiding, and they were again attacked by the colonial militia. As the British retreated to Boston, the colonials continued to shoot at them from behind cover on the sides of the road. This was the start of the Revolutionary War.