George Washington was not a military genius, but his French allies were:

Later, Washington was painfully slow to grasp the significance of the war in the Southern states. For the most part, he committed troops to that theater only when Congress ordered him to do so. By then, it was too late to prevent the surrender of Charleston in May 1780 and the subsequent losses among American troops in the South. Washington also failed to see the potential of a campaign against the British in Virginia in 1780 and 1781, prompting Comte de Rochambeau, commander of the French Army in America, to write despairingly that the American general “did not conceive the affair of the south to be such urgency.” Indeed, Rochambeau, who took action without Washington’s knowledge, conceived the Virginia campaign that resulted in the war’s decisive encounter, the siege of Yorktown in the autumn of 1781.

Frankly I like the version where George Washington was a civilian soldier who did the best he could against his habitually warlike enemies better, anyway. (Via Kottke.)