In December 1937 it participated in the Battle of Teruel, attacking in the area of the cemetery. Although the brigade came to take the first nationalist trenches, the general attempt ended in failure. The 117th MB would also see action during the Battle of Alfambra, although its participation was a disaster: on February 21, 1938 it withdrew from the front, completely demoralized after an aerial bombardment. saw action during the Aragon Offensive and, later, during the Levante Offensive.