I'd have to review the sequence of technical tasks & experiments. This is very likely to accelerate development, but how I cant say. In the 1920s Goddard did most of his work with liquid fuels, which is good for high altitude or long range rockets, but for short range small utilitarian rockets solid fuels have some advantages. In other words this may not help the US with weapons in the 1940s. That is I'm unsure the US would see a advantage in a high cost low return weapon like a V2 equivalent.
What could the US military do with liquid fuel missiles in the 1940s?
What could the US military do with liquid fuel missiles in the 1940s?
Waste money on creating wonder weapons like the Nazis instead of spending it on useful things like tanks, anti-submarine escorts and the Manhattan project? The Allies wanted for many things during WW2, but extra ability to inaccurately bomb Axis civilian population centers with conventional explosives & incendiaries isn't one of them.
Depends if they used ethanol for fuel.
Missilemen could find a secondary use for that stuff, easy