The main one to look at is the US. The dispute is whether the war victory propelled the US to become a superpower, or the Keynesian new deal. War Keynesianism is an interesting concept though, but I'd argue that growth arising from a state of conflict is historically inconsistent. Both Japan and South Korea's development was more because of US aid than it was because of their part in the war. The same can be said for Germany, which was obliterated by the end and had to (basically) start from scratch.