In 1949, aged 18, he joined the marines brotherhood and completed the "Cavalaire" course in 1950.
After his commando training, he left for Indochina within the famous Commando François. In 1951, he was in hospital receiving treatment when the Ninh Binh tragedy occurred. He regretted all his life for having not shared the bloodbath of his battle buddies.
Thereafter, he went to the front alongside North Vietnamese commandos. In 1953, he returned to Metropolitan France and went to Siroco where he trained as a Special Executive (Cadre Spécial). He obtained a higher diploma in 1957 after which, he joined Commando de Penfentenyo and was appointed commander of group 21. By the time he left this commando in 1958, he was petty officer. In 1961, Christian Abjean went in for training as a parachute instructor and joined Commando de Montfort. On July 14, 1961, at Siroco, he was decorated for his exploits with the cross of the knight of the Legion of Honour by Commander Servent.
A tireless warrior, he continued his missions within Commando Yatagan, followed by Commando Tempête (Storm). Christian Abjean left the French National Navy with the rank of chief petty officer. Commended ten times, Christian Abjean received the military medal, the T.O.E. war cross, the military valour cross, and many other awards. He was elevated to Officer of the Legion of Honour on May 2, 2003.
Christian Abjean was laid to rest on January 3, 2008. His eulogy was read by Lucien Galea before a dozen of Commando François veterans who could barely hold back their tears. The oldest of them, Fanch' Falhun, sang a song in his honour as farewell from his fellow commandos.