If you're really interested in military purposes look for a school that is either military itself... or if you don't want to join up, look for an institution that is closely situated next to a military research lab and has links with the lab (for instance, I did graduate work at the University of Dayton, which is near Wright-Patterson AFB.. and did my graduate thesis experiments at the base's research facilities... albeit in laser technology... not the stuff you're interested in). Sometimes even as a civilian you can get the specific lab to even pay for a co-op type of education... but you'll probably owe them time in the labs (3 years for every year of education they pay for.) Note: In order to work on these types of projects, you'll probably have to be a US citizen and go through the security clearance process.
Note: this is just a starting suggestion... you'll want to look at faculty research pages, publications, even make some calls and eventually visit your choices.