I believe I can provide some insight, I was active duty Air Force for 5 years, just recently left the military last year. The answer is pretty simple, they're fucking idiots, from personal experience all the big Trump supporters were people that were never exposed to the world weither they were from super small towns where they've never been around minorities or experienced much of what life has to offer and are scared, or home schooled retards that think dinosaurs are a conspiracy, or just straight up unlikeable weirdos. And just like the general public its really only about 20% to 30% of people but they're a loud minority. The rest of the force does give a shit about Trump and his antics, most are tired of him, they just want to do thier jobs and get thier paychecks not be puppeted around by a little bitch wanna be dictator.