WTF, do you know what you're talking about...never mind you don't. The United States made out like bandits after World War II not because of our military but because the German, French, and Japanese economies were destroyed. The Soviet economy was a victim of communism and the English industrial base was compromised. Our military gave us something visible to be proud of and to save lives but it was our industry. That all changed in the 1970s.
Where in the conservative philosophy have you read that it means we should be all over the world? Conservatives believe in a strong military as a matter of self defense. People like Pat Buchanan, the late William F. Buckley, and even Dick Cheney have written that we were over extended.