The 81st Mixed Brigade fell back under enemy pressure, losing Campilo and causing a breach in the front that would also drag the 83rd MB into its retreat.

A day later, after giving ground and facing the danger of being surrounded, the 83rd MB withdrew together with the entire division towards Albocàsser, and then towards Castellón de la Plana.

On June 10, the 83rd MB was covering part of the right flank of Castellón de la Plana, although on June 13 it had to face an enemy attack on the heights of "Choquera"; the brigade launched several counterattacks in the Borriol mountain range, although the assaults it was subjected to finally forced it to withdraw towards the capital of Castellón.

After the end of the fighting in Levante, the unit was assigned to the 73rd Division,[10] remaining as a general reserve of the Central Region Army Group (GERC).

On March 8, 1939, under the rule of the National Defence Council, the 83rd MB was sent to Madrid in support of the Casadista forces,[11] where it collaborated in the assault on the Jaca Position.