Born in 1939 in Vietnam, Raymond Belle was the son of a French physician and Vietnamese mother. During the First Indochina War, his father died and he was separated from his mother, after which he was sent to a military orphanage in Da Lat at the age of 7. He took it upon himself to train harder and longer than everyone else in order never to be a victim. At night, when everyone else was asleep, he would be outside running or climbing trees. He would use the military obstacle courses in secret, and also created courses of his own that tested his endurance, strength, and flexibility. Doing this enabled him not only to survive the hardships he experienced during his childhood, but also eventually to thrive. After the Battle of Dien Bien Phu in 1954, he returned to France and remained in military education until the age of 19, when he joined the Paris Fire Brigade, a French Army unit.