US occupation probably did shift energy away from militarism and towards economy though, no? Wars that didn't happen would have hurt them and instead of happening the effort of the wars was put towards making stuff.
It's a mixed back. Germany was supposed to be demilitarized following the immediate end of WW2 but the successor to the Marshall Plan (which was actually fairly short-lived relative to what many people seem to think) was a US program to rebuild the European military as a bullwark against communism. This led to a reversal on the decision that Germany should never have a military again although it was initially limited to purely defensive operations - a restriction that has been repeatedly weakened due to the insistence of its allies, including the US.
A bigger difference between the two Germanies is that East German industry was mostly stripped for parts as part of reparations to the Soviet Union which continued for a long time whereas West Germany received active funding as part of the Marshall Plan. West Germany also had access to a lucrative market for exports whereas East Germany had to focus on reparations first, self-sustainability second and trade at a distant third with very bad returns.
