Jean entered the École spéciale militaire in 1924, and was a commissioned a Sous-lieutenant in 1926 (Rif promotion).

Reintegrated in the armistice army on 16 August 1942, he was placed hors cadres at the general staff headquarters of the 15th Military Division.

Detached on 1 December 1942 to the 1e RCA, he then was designated as the general secretariat of the region of Rabat, on 24 March 1943.

In 1944, he took command of the Marching Regiment of the Foreign Legion RMLE (French: Régiment de marche de la Légion étrangère, R.M.L.E) towards the end of the war, succeeding regimental commander Lieutenant-colonel Louis-Antoine Gaultier.

Commandment of the territories of Agadir-Confins, on 31 May 1947, then, general secretariat of the region of Rabat, on 31 December 1947 and director of indigenous affairs course, on 30 August 1950.

On 9 August 1958, Jean Olié was put at the disposition of general director of the institute of high studies of national defense (French: institut des hautes études de la défense nationale) and center of high military studies (French: centres des hautes études militaires).

He totalized 14 citations and is a Caporal-Chef d'Honneur (Honorary Senior Corporal) of the French Foreign Legion.