The airline was named after the Flying Tigers fighter unit of World War II, officially the 1st American Volunteer Group. Ten former AVG pilots, after returning to the United States in 1945, formed the Flying Tiger Line established on 24 June 1945 as National Freight Service known under the name of National Skyway Freight using a small fleet of 14 Budd Conestoga freighters purchased as war surplus from the United States Navy. The pilots and two ground crew provided half of the initial investment, with the balance coming from California oil tycoon Samuel B. Mosher. For the next four years, Flying Tiger Line carried air freight on contract throughout the U.S. and, as the airline expanded, carrying supplies to U.S. troops under Gen. Douglas MacArthur during the occupation of Japan.