Which branch is "less" competitive for scholarship?

Air Force vs Army.

I will be college freshman very soon with Engineering major and i am willing to serve more than 10 years in any branch.

But the problem is i didn't get enough financial aid which can pay for my tuition... and my family does not have ability to support me financially..... this is why i need as more scholarship as possible.

Any opinion?


My High school GPA is 3.6 with 1980 SAT score.