joined in November the Superior School of the French Army () and the Superior War School () at Paris in quality of a group professor. On September 1, 1979, he pursued, in quality as an auditor, the 29th session of the Centre of High Military Studies () and remained at the corps of CHEMM as a cadre. During that period, he participated to several study voyages: South America from March 13 to 27 1980, in Turkey and in Yugoslavia from June 11 to 22 1980. Recalled to the cabinet of the minister of defense (), on June 9, 1981, as assistant chief to the chief of the military cabinet, he was designated in title for being a government missions chargé () to participate from July to August 1982, to the mise en place of the 2nd Foreign Parachute Regiment 2e REP through Operation Épaulard spearheaded by Lieutenant-colonel Bernard Janvier, at Beirut, Lebanon. Mission led in particular by the 2nd Foreign Parachute Regiment 2e REP. He was cited at the orders of the armed forces for his action preponderant in the preparation of the deployment of the Multinational Force in Lebanon FMSB. He was nominated to the 1st section of officer generals, on September 1, 1982. He rejoined the Foreign Legion Groupment and the 31st Brigade, on October 10, to assume command. Designated to command the French contingent of the Multinational Security Force in Beirut, he toured in Lebanon from May to September 1983 and was awarded an ultimate citation at the orders of the armed forces. Following, he reassumed command of his commandment post at the Foreign Legion Groupment GLE, relieved in the meantime during his mission by Colonel Forcin. On July 1, 1984, the GLE became the Commandement de la Légion Étrangère and Général Coullon oversaw the extended prerogatives in exercising the ensemble of applicable attributions of the French Foreign Legion in principal at the title of personnel administration. In addition, Général Jean-Claude Coullon, presided over the patronization and enacting of the 6th Foreign Engineer Regiment 6e REG, which became the 1st Foreign Engineer Regiment 1e REG fifteen years later, on July 1. On July 1, 1985, he was designated as Director of Personnel of the French Army. He was promoted to the rank of Général de division on August 1, 1985, then elevated to the rank and designation of Général de corps d'armée on June 1, 1987. Member