How Did the Germans Invade All Europe Simultaneously

Fritz haber was one of the guys who said, like, we have to tie industry and science and arms production and the government altogether. He based a lot of what he was doing on what was already happening in the united states at the time. Germany started world war on with six months of bullets and shells. And so germany couldn't get any more bullets any more. They caul make bullets, but they couldn't make gunpowder, because gunpowder relies heavily on nitric acid or nitrate - both of which are very nitrogen heavy compounds.