On April 27, the brigade set out with the 213rd, 216th and 230th battalions to the Vizcaya front, now under the command of the Joaquín Burgos Riestra. Upon its arrival in Vizcaya, it was added to the 2nd Basque Division, placing two of its battalions in Amorebieta and another in Miravalles. During the fighting of the Battle of Bilbao, on June 13 the unit was practically destroyed in the vicinity of the so-called "Belt of Death" —the last of the defensive lines that protected Bilbao. Its remains, however, managed to withdraw and later return to Asturias.