[1] Prior to assuming the main responsibility of training Legion recruits, it was an infantry unit which participated in campaigns in Morocco, Levant, French Indochina, and Algeria.

[3] The regiment participated in 1943 in the Tunisian campaign, seeing combat in the Zaghouan Mountain (or djebel).

[3] In July 1962, the 4th Foreign Regiment was redeployed to Reggane in southern Algeria, tasked with guarding the oil fields and French nuclear facilities in the region.

[1] This company has several subordinate administrative units such as the Office of Maintenance and Logistics, the Office of Job Training (Bureaux Instruction Empoi), and the Directorate of Human Resources (Direction des Ressources Humaines).

[7] Inscribed on the regimental colors of the 4th Foreign Regiment are the motto of the Foreign Legion: "Honneur et Fidélité"[8] Chant de Marche : C'est le 4 en chantant featuring: À travers pierres et dunes, S'en vont les képis blancs.

Sous le soleil, clair de lune, Nous marchons en chantant.

Sur les pistes des Corbières, Nous partons en mission.

Une colonne de bérêts verts, S'en va à l'instruction.