The constitution is enforced by the courts.
Every bit of training and new technology the military does would give a "strategical advantage" in such a theoretical conflict. "This looks fishy" is a long way from a convincing argument that we are in any sort of danger of being enslaved by our government. There are enough issues to argue about already, can we just keep such wild speculation out of it.
You scoffed at the idea that the checks and balances in the constitution are what keeps us from becoming a dictatorship. Since they are a major part of the constitution and you feel they are of minimal value, that led me to believe you don't hold much of the constitution in high regard. Feel free to correct which part I have wrong.