The far-right Reconquista movement appeared sometime in 2015. During a speech by the head of National Corps' propaganda department, Mykola Kravchenko, in the framework of the 1st Paneuropa Conference he "reflected on the format of the Reconquista project as a result of two years of development," pointing out that the movement had been existing as of 2015.1 

"... the Reconquista Movement aiming at building the Paneuropean confederation of sovereign European nations, or simply Paneuropa, remains on the positions of the classic Third Way (the so-called third political theory) in the vein of Julius Evola, Ernst Jünger, Pierre Drieu la Rochelle, Oswald Mosley and Dominique Venner, which was discussed at the Founding Paneuropa conference in Kyiv on April 28, 2017."1

Several Reconquista groups have sprung up in the meantime in the rest of Europe.

French Reconquista

A post of the now deleted Reconquista Europa blog reads:

"Back in 2015, Pascal Lassalle delivered in Kyiv a lecture entitled “For the Pan-European Third Way. French Solidarity with Ukraine at War” and launched the French branch of Reconquista."1

The historian Nicolas Lebourg had also picked up on Lassalle's Ukrainian activities:

"Some marginal groups have continued to support the Ukrainians, such as the GUD [Groupe Union Défense; *1968] in Lyon and New-Right member Pascal Lassale. In 2017, both were involved in creating the Reconquista, a “pan-European” movement (with an unashamedly pro-Nazi style) that opposes “Putin’s anti-national regime,” which it considers divides European peoples. Reconquista wants to construct the “Intermarium,” meaning a Europe with frontiers at the Adriatic, the Baltic, and the Black Seas.2 Christian Bouchet has denounced the project as Atlanticist and anti-nationalist, even stressing that some Italians in the Reconquista network had formerly been members of Gladio, implying that the idea of an Intermarium would become an instrument used by NATO to divide Eurasia.3 The Intermarium notion finds itself now again on the agenda of the Polish government, but combined with a commitment to the European Union, whereas the Ukrainian Azov movement considered it an anti-liberal replacement for the EU. Neither version has been able to retain attention in the debate in France."4

Swiss Reconquista

"Besides, Pascal Lassalle co-organized and participated in multiple events in France, Switzerland and Ukraine aimed at highlighting historical foundations of the Ukrainian right to the national self-determination and developments of Ukrainian nationalists’ struggle for the third geopolitical way between the Euroatlanticism and Eurasianism. One of such conferences was arranged by Bjorn Sigvald, Swiss representative of the Reconquista movement closely connected with the French segment of European third positionists as a natural born Francophone."1

Finnish Reconquista