The battalion dissolved on December 31, 1950; is reconstituted on March 1, 1951 (1er BEP, II formation) and is seen participating excessively in combat operations at Cho Ben, on the black river and at Annam. On November 21, 1953; the reconstituted 1er BEP is parachuted on Dien Bien Phu. In this gigantic battle, the reconstituted (1er BEP, II formation) 1er BEP counts 575 killed and missing for the second time in a traditional Foreign Legion battlefield. Amongst the fatal casualties feature Lieutenants Dumont, Boisbouvier and de Stabenrath, killed in between April 1 and May 13 as well as Sergent-Chef Grimault, killed on March 30. Reconstituted for the third time (1er BEP, III formation) on May 19, 1954, the 1er BEP leaves Indochina on February 8, 1955. The 1er BEP totals 5 citations at the orders of the armed forces and the fourragère of the colors of the Médaille militaire. The 1st Foreign Parachute Battalion (1er BEP, III Formation) becomes the 1st Foreign Parachute Regiment (1er REP) in Algeria on September 1, 1955.