[1] The young Isorni was raised in the high end Faubourg Saint-Germain district, although he found himself a regular target for scorn from his schoolmates due to his Italian roots and unusual surname.
[5] Nonetheless Isorni quickly became associated with a new tendency that sought to defend the reputation of Pétain and the Vichy period and he became a regular writer for René Malliavin's Ecrits de Paris, a journal dedicated to this cause.
[6] Isorni helped establish, and became leader of, the Union des nationaux indépendants et républicains, a political party that supported Petainisme and he ran as a candidate for this group in Paris during the 1951 elections.
[10] In parliament Isorni came under the wing of the Parti Paysan, a rural conservative group that subsequently formed part of the National Centre of Independents and Peasants, and became known as one of its most vocal, as well as its most right-wing, members.
[8] That same year Isorni was also the driving force behind the Association for the Defence of the Memory of Marshal Pétain, a group that campaign for the "Hero of Verdun" to be released from prison.