sentences:  A youth movement, "Front de la jeunesse", was formed, although the party was also closely linked to GUD.The ON militants had formed a group called the "Faire Front" and in September 1973 merged into the Front National, isolating leader Jean-Marie le Pen by taking two-thirds of the seats on the party's national executive.However, in a court case that followed le Pen succeeded in gaining the upper hand, forcing the group to split from his party and establish the PFN as an alternative group in 1975.