And Germany - and the world at large - was at the edge of   ground-air missles [1], making cannons on bombers obsolete.<p>[1]<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Rheintochter" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Rheintochter</a><p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;List_of_German_guided_weapons_of_World_War_II#Surface-to-air_missiles" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;List_of_German_guided_weapons_...</a>