George Rogers Clark

George Rogers Clark was an American military officer and surveyor from Virginia who became the highest-ranking Patriot military officer on the northwestern frontier during the Revolutionary War. He served as leader of the Virginia militia in Kentucky throughout much of the war. He is best known for his captures of Kaskaskia in 1778 and Vincennes in 1779 during the Illinois campaign, which greatly weakened British influence in the Northwest Territory and earned Clark the nickname of "Conqueror of the Old Northwest". The British ceded the entire Northwest Territory to the United States in the 1783 Treaty of Paris.

Clark's major military achievements occurred before his thirtieth birthday. Afterward, he led militia forces in the opening engagements of the Northwest Indian War, but was accused of being drunk on duty.

Source: Wikipedia