Disembarked at Provence on August 15, 1944, the 3e DIA entered first to Toulon, participated to the Liberation of Marseille, manoeuver during which the 3e and 7e RTA formed the forward contingent. The regiment made way towards the Alpes and Jura, until the Alsace. Accordingly, the regiment then mounted the confrontations in the Vosges, apprehended Mulhouse and mounted the defensive of Strasbourg at Kilstett, in January 1945.