Wikipedia has a nice page about foreign involvement: https://news.ycombinator.com/reply?id=24961571&goto=item%3Fid%3D24961407%2324961571 https://news.ycombinato

Wikipedia has a nice page about foreign involvement: https://news.ycombinator.com/reply?id=24961571&goto=item%3Fid%3D24961407%2324961571 https://news.ycombinator.com/reply?id=24961571&goto=item%3Fi... A lot of US companies supported the fascists: Some American businesses supported Franco. The automakers Ford, Studebaker and General Motors sold a total of 12,000 trucks to the Nationalists. The American-owned Vacuum Oil Company in Tangier refused to sell to Republican ships and at the outbreak of the war. The Texas Oil Company rerouted oil tankers headed for the Republic to the Nationalist-controlled port of Tenerife and illegally supplied gasoline on credit to Franco.[70] Despite being fined $20,000, the company continued its credit arrangement until the war ended. The Nationalist spent almost $1 million a month on tires, cars and machine tools from American companies between 1937 and 1938.[71] After the war had ended, José María Doussinague, an undersecretary at the Spanish Foreign Ministry, stated that "without American petroleum and American trucks, and American credit, we could never have won the Civil War