 De Castries' was then informed that while he would retain the appearance of command to the outside world, in reality the effective command of the fortress would be in Langlais' hands.Following his captivity as a Viet-Minh POW, Langlais returned to France but soon found himself in Algeria as the commander of an airborne brigade.Langlais commanded the 22e R.I.Ma during the Algerian War in the Marnia region from 1955 to 1959.