You can find various editions of the series through retailers and collectors: Spanish editions like Sturmtruppen Nº 1 have been published by editors like Casa del Libro Collectors:

The Professor presents a “super-tank” made of cardboard and hope. It moves at “maxspeed” (here’s your keyword!) — backwards. When the Lieutenant demands it go forward, the tank collapses into a flat sheet. “Ah,” says the Professor. “It is also a mobile bunker. On the ground.”

The image of the German Sturmtruppen —elite assault soldiers sprinting through shell-holes, flamethrowers hissing, and submachine guns blazing—has become an enduring symbol of 20th-century tactical innovation. These Sturmtruppen (storm troops) were designed for one purpose: to break the trench stalemate through infiltration, surprise, and maximum speed. While their most famous deployment occurred on the Western Front of World War I (1917–1918), their tactical DNA migrated to other conflicts, most notably the Spanish Civil War (1936–1939). This essay argues that while the Spanish Civil War did not feature German Sturmtruppen as organized units, the principles of Stoßtrupp tactics—speed, infiltration, and small-unit autonomy—were adapted by both Nationalist and Republican forces, reaching a paradoxical “top speed” of violence that transformed modern warfare. Yet, the raw human experience, captured in the Catalan lament “jo que guerra” (“what a war”), reveals that tactical speed could not outrun the moral and physical devastation of the conflict.