The people, because most in the military are CONSERVATIVE.
In the late 1990s, an organization surveyed military officers on their political beliefs. The poll found that 90% of officers identified themselves as either Republican or conservative.
The survey scared the socks off the Washington DC bed-wetting liberals. Communist columnists were horrified and called for government action to balance out the officer corps with more leftists. The seditionists in Washington are scared that if the military is called out for domestic disturbances, that the military will turn their guns on the leftists.
This survey is one reason you see military ballots trashed by democrats.