Acéphale is the name of a public review created by Georges Bataille and a secret society formed by Bataille and others who had sworn to keep silent. Its name is derived from the Greek ἀκέφαλος.
https://en.wikipedia.org/wiki/Ac%C3%A9phale
What had the face of politics and imagined itself to be political, will one day unmask itself as a religious movement. Kierkegaard’s prophecy is taken as the epigraph of the Acéphale journal and as the sacred task of the corresponding secret society. The College of Sociology is the third and most public layer of the new initiative Georges Bataille undertakes in April 1936. It is a decisive and paradoxical moment. At the very height of the anti-fascist struggle, Bataille turns his back on politics and leaves Contre-Attaque, the combat union of revolutionary intellectuals he has only just formed together with Claude Cahun, André Breton, and others. In the same moment, he dedicates himself completely to the secret society under the sign of the acéphale, a headless figure who has come to him in dream and trance as much as in his study of ancient art, who is starry-breasted, labyrinthine of belly and has the face of death for its reproductive organs, who clutches the knife of sacrifice in its left hand and the sacred heart in its right, and whose appearance signs the dramatic break with even the most revolutionary forms of political struggle.
https://acephale.info/