The 77th Division was a short-lived unit that was established in December 1938, shortly before the chaotic withdrawal and rush to the border that followed the Francoist Catalonia Offensive.

[3] In the last week of January 1939 the 77th Division, together with the 242nd Mixed Brigade —which had not been ascribed to any division—,[4] tried to establish a planned defensive line along the course of the Tordera River in order to halt the massive rebel offensive.

But the effort proved futile and in practice it became impossible for the Republican forces to put up any meaningful resistance.

[5] In the face of the powerful and steady enemy advance the 77th Division abandoned the defensive line and withdrew to the town of Vic, which it lost on 1 February.

In the midst of the chaotic retreat, the 77th Division was to all effects disbanded and data about its final whereabouts and fate as a military unit are unknown.