On August 6, the unit renamed the "183rd Mixed Brigade", within the 57th Division of the 16th Army Corps, giving command of it to José Penido Iglesias. After the start of the Asturias Offensive the 183rd MB was sent to Colombres, with the mission of defending the coastal highway, being added to Division «A» (provisional). On September 5, the Republicans lost control of Llanes, so the brigade was withdrawn from the front, towards Mieres, to join Division "C". Penido Iglesias was dismissed and replaced by Ángel López Bonachela.