Im afraid it wasent true... Our real arsenal was in fact USSR: they sent their best planes, tanks n technical people. México helped so much too.
Ok, USA started to sent weapon to Spanish Democratical Republic )the most light, I think), but very soon joined the French&Brittish No Intervención traition.. But at least USA goberment didint forbbiden than USA civils gone to help the Republic, as French done in Pirineos... USA voluntiers were infantería ground troopes or Republic Air Forcé pilotes & instructors... But I only study History in school till I was 16 so I can be in a great error, @Stonervet68
EDITION: I saw now ya said "USA was Francos arsenal(when Sp. Civil War ends)". Yare right: excuse my error.
Btw, here is a War hero too n have streets in his name, the Canadian doctor who made the first blood transfusion in a war frontline. Not only in the Spanish Civil War he saved a lot of lives, even with fascist prisioners, cos his tecnic was used in the futures wars (allways so more war n problems in the World, Marley sings...). Now I cant remember his name...