Among the many German aircraft designs that participated in the Condor Legion, and as part of other German involvement in the Spanish Civil War, a single Ju 87 A-0 (the V4 prototype) was allocated serial number 29-1 and was assigned to the VJ/88, the experimental "Staffel" of the Legion's fighter wing. The aircraft was secretly loaded onto the ship "Usaramo" and departed Hamburg harbour on the night of 1 August 1936, arriving in Cádiz five days later. The only known information pertaining to its combat career in Spain is that it was piloted by "Unteroffizier" Herman Beuer, and took part in the Nationalist offensive against Bilbao in 1937. Presumably the aircraft was then secretly returned to Germany.