 Personal acquaintance of officers commanding Campos de Concentración and Comisíon Clasificadora, Bau did his best to release Catalan prisoners and enlist them either in the Carlist tercios or in the Falangist banderas.Following the end of the war he returned to Tortosa, though he is not listed as taking part in the Carlist-Falangist competition for power in Catalonia.Bau was not invited to the victory parade of May 19, 1939.