Published in collaboration with the Reich Air Ministry.
Volume 1: nº8 (april 1940) in german. Nexts volumes from nº14 (july 1940) to december 1940, translated in spanish. From nº1 january to december 1941, only translated in spanish with correlative pages from 1 to 832. From nº1 january to april 1942, pages from 1 to 264.
Volume 2: from may 1942 to may 1944.