Rubuta ci gaba don wannan sakin layi - A farkon yakin basasar Spain a 1936, yana da shekaru 18, Sanz Bocos ya shiga cikin sojojin Jamhuriyar, a cikin rukunin Antigas, yana farawa a gaban Villanueva del Pardillo, don daga baya a ba shi Talavera
gaba. Ya kasance wani ɓangare na ƙungiyar da aka aika zuwa makarantar matukin jirgi a Kirovabad, Azerbaijan, inda aka zaɓe shi ya zama matukin jirgi na Polikarpov I-16.