Question

what effect did wwii have on the u.s. military?
reliance on surplus made the military outdated.
the military grew, making the u.s. a superpower.
bloody attrition drastically shrank the u.s. military.

Explanation:

During WWII, the U.S. military expanded significantly in size and capabilities. It became a major global - power player post - war. The U.S. did not rely on surplus in a way that made it outdated, and it did not experience a drastic shrinkage due to attrition. Instead, it grew in personnel, weaponry, and strategic influence.

Answer:

The military grew, making the U.S. a superpower.