It was made up of the 25th, 86th, and 114th brigades, with their command post in Villanueva de Córdoba.

[1] Command of the division fell to Aldo Morandi, with Fritz Schiller as Chief of Staff.

[2] In February 1938, Morandi took command of the Extremadura Division,[3] being replaced by José Frías González-Mouvelles.

Except for a few sporadic actions, for most of the war the 63rd Division did not take part in significant military operations.

In March 1939, after the Casado coup, Ildefonso Castro Ruiz assumed command of the unit.