Bomber B was a German military aircraft design competition dating to just before the start of World War II to develop a second-generation high-speed bomber. The new designs would be a direct successor to the Schnellbomber philosophy, using high speed as its primary defence. But the Bomber B would also be a much larger and more capable platform, allowing it to carry bomb loads equivalent of any existing medium and heavy bombers then being used, or even considered, by the Luftwaffe. The winning airframe design was intended to form the backbone of the Luftwaffe bomber force, replacing the wide collection of semi-specialized twin-engined medium bomber designs intended for replacement, as many of them had origins going back as early as the mid-1930s, shortly after the Luftwaffe's founding. The