Rubuta ci gaba don wannan sakin layi - A cikin 1936, Jam'iyyar Kwaminis ta Faransa ta shawo kan shi ya shiga cikin Brigades na Duniya na Yaƙin Basasa na Spain kuma ya yi yaƙi da ƙungiyar 'yan ƙasa. A ranar 30 ga Nuwamba, ya zo Spain kuma ya shiga Jam'iyyar Kwaminis ta Spain. Bayan an daukaka shi zuwa matsayin kyaftin a Albacete, a ranar 23 ga Disamba Morandi ya zama shugaban ma'aikatan Brigade na XIV na Duniya, wanda aka sanya shi nan da nan a Andalusia. Ya isa gaban Madrid
, a ranar 14 ga Fabrairu an nada shi kwamandan bataliya ta 21 da ta 24 da ke cikin Yaƙin Jarama, wanda a lokacin Morandi ya ba da rahoton rauni a matakin cinya. Daga baya, ya zama shugaban Brigade na 86 da na 63 da aka tura a Córdoba.