[2] On July 5, it broke the enemy front, and two days later managed to occupy the urban area of Albarracín; the nationalist garrison was besieged in the Cathedral and the Civil Guard barracks, after the 61st MB took the “Vallejo Largo” Vertex and the town of Monterde.

However, the arrival of a nationalist relief force thwarted all the advances made up to then and the brigade had to return to its initial positions.

During this withdrawal, some forces of the 61st MB were isolated north of the Ebro River, although most of the unit became part of the 13th Army Corps.

[7] Initially concentrated in Liria, shortly thereafter it would be located between Puerto de Escandón and the Valbona river, south of Teruel.

On May 28, it had to face a nationalist assault, which attacked the positions of Formiche Bajo and Loma del Erizal, where the 61st Brigade maintained strong resistance.

However, due to enemy pressure, the brigade had to undertake a slow retreat until on July 21 its forces reached the defenses of the XYZ Line.