They originate in the 20s Italy as a response to Mussolini.
I've also read about pockets of them that were instrumental during the French resistance.
They predate Warzaw.
Regardless, they're obsolete. As I've said many time, actual ideological Fascists are a tiny minority of the population - both in the U.S. and the world today - and collectively have political and social clout dwarfed by, say, the LGBTQ rights movement. There are new right-wing movements that have indeed risen in the world since, some very terrifying, such as these new camps of the Republican Party of the United States, more extremist factions of the European Nationalist/Eurosceptic Movement, the Post-Soviet Parties-of-Power, Islamist Fundamentalism, Revisionist Zionist. BJT-style Hindu Nationalism, African Nationalism (the right-wing of hard African politics, as opposed to Pan-Africanism and African Socialism which are the left-wing, in a very general sense of a complicated political dynamic), Latin American Populism, etc., but none of these things are ACTUALLY Fascism! Fascism, as a movement, is all but dead. These new hard-right-wing movements should be recognized for what they are, individually, as movements, with their own origins and their own contexts, to understand them accurately and the threats they represent, and given their own appropriate labels when discussing them. Slapping an anachronistic label on such movements, or even any specific number of them, usually to invoke a sense of baggage in rhetoric from the old labels that is not entirely applicable, is counter-productive, detrimental, and ruinous to the discourse, and to any realistic solutions of the problems faced. "Know your enemy and your battle is half-won." But what would Sun Tzu say of someone who thought they were facing the wrong enemy, and kept insisting on it. I've brought this problem up to other posters here many times, but they've always have a flimsy, tissue paper, knee-jerk reaction, or even aggressive lashing-out "reason," why they cling to that label, why they believe it's valid, and why everyone should, too - to date, I haven't seen an eloquent, well-reasoned, rational reason put forward in the defense of old labels being applied and not recognizing them as new and different movements and the contexts and dangers they represent. In fact, such toxic nostalgia is actually, itself, a hallmark of EVERY hard-right-right movement, and that itself should be worrisome when people opposed to such movements insist on emulating their style, even in such specific ways. In fact, my criticism of the sloppy and counter-productive of such old terms for modern movements has gotten a couple posters here to say I MUST be a Fascist by obvious Inquisition/Witch-Hunting/Red Scare-type logic. It's time to move beyond the '20's to '40's and face the challenges of the modern world - and recognize them for what they are, and label them as such.
