The "R.M.L.E" was stationed in Morocco in 1920, where it was designated for the first time as the 3rd Foreign Infantry Regiment; the regiment subsequently took part in combat in the Rif and in various campaigns around the country. In 1943, the "R.M.L.E" was reformed and subsequently engaged in combat operations against the German forces at Mansour mountain, in Tunisia, before participating in the campaign of France from 1944 to 1945 within the ranks of the 5th Armored Division. Following theses events, the regiment reached the Rhine, conquered Stuttgart, and made way to Austria during the moment of the armistice. With three new citations, the regiment obtained a "fourragère" with ribbon colors of the Croix de Guerre 1939–1945, materialized on the double "fourragère" obtained during the First World War. The "R.M.L.E" was also decorated by the "United Distinguished Badge U.S." with inscription "Rhine-Bavarian Alps".