Why the British Should Not Have Defeated the Americans in the Revolution In the second half of the eighteenth century, the British were faced with rebelling colonies. Finally realizing that they had to fight to keep their colonial possessions, the British sent troops to America. Once the battles began in America, the British were not impressed with the colonial military, but the weak militias soon proved to be effective. With foreign aid from France, American devotion, and the lack of British vigor, the Americans soon discovered the open door ....