Military, Intelligence, Progressive, and Conservative are all nouns. Not sure where you are going with this. I think what you mean is these words can be a noun adjunct.
I totally get everyone is on a spectrum. Thank you for pointing that out.
When someone says they are a progressive conservative what they mean is they are a conservative who is embarrassed by the garbage conservatives push out. They are not progressive because a progressive is the opposite of a conservative.
Progressive want change, conservatives do not. So you are essentially saying you are someone who doesn't want change that wants change. It is nonsensical.
Please stop it with pretending you have English language mastery.