The command of the Brigade fell to Víctor Álvarez González, who received military advice from Pedro Martínez Coll.

[1] 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).

[1] Towards October 5, the unit was covering the front of the mountain passes, on the heights of "El Pedrusco", "El Castillo", "Altocena" and "Busdrugo", but an advance of the nationalist forces of Antonio Aranda led them to the Campo del Caso, causing the isolation of the republican forces; all the brigade troops were taken prisoner, and the unit disappeared.

The 183rd Mixed Brigade remained at the Madrid front for the rest of the war, without intervening in any major military operation.