Contemporary recollections of the Second World War proved to be an inspiration for a number of design aspects. For instance, Anderson recalled that RAF pilots had found it difficult to counter German attacks during the Battle of Britain, since taking off from the ground meant that it took considerable time to intercept the enemy.[34] He therefore made Spectrum's headquarters an airborne aircraft carrier called "Cloudbase".[34] The Mysteron rings were inspired by an advertisement for the Oxo line of food products, which included an image of the brand name sliding over a frying pan and the outline of a woman's body.[32][34]