Frank Glasgow Tinker
Frank Glasgow Tinker was an American mercenary fighter pilot for the Spanish Republican Air Force, during the Spanish Civil War. He was the top American ace during the Spanish Civil War.
Frank Salty Tinker was born in Kaplan, Louisiana, and grew up in DeWitt, Arkansas. In 1926, he joined the US Navy hoping to become a naval aviator. In 1933, he graduated from the US Naval Academy. In 1934, he was assigned to US Navy aviation and became a pilot of a reconnaissance floatplane of the USS San Francisco cruiser. Because of problems with alcohol and brawls, he was dismissed from the Navy.
Source: Wikipedia