Though I have often found agreement with you in your recent posts, I can only suggest that those words that you just used:
consensus, compromise, and concession
...are really the final measure of the democratic framework.
Negotiation is the way things are done in a democratic system. In your military model, there is necessarily no negotiation. An order is given by the President of the United States, and down through the ranks it goes, until the order is finally carried out.
Complaining troops may be the result of such top-down decision-making, but wiser officers understand that morale-boosters and incentives also work well to attract and retain troops in the military world. It is my understanding that an incentive of $20,000 in enlistment bonuses has just been offered to prospective new soldiers, for example.
Using your model, would you offer that to city workers?

I think that, if you go over the contract outcomes of the late negotiations with the various unions, you will see that they were by no means unfair to the city.
I am curious though. Exactly how would you do this- if you were mayor? Would you ride in like some general on a horse and attempt to dictate all things financial? If you did so, exactly how far do you think that would get you?
I've dealt with a few people who tried to do that kind of thing, both in a community and in the schools. It ends up costing more for the "big fight" in the long run, than it does to negotiate, which is what we end up doing anyway.
I think that the Mayor has done a fine job working will all sides of this issue.
And though it would take another whole post to respond, I really think that the so-called budget "problem" is way overblown.
Just my opinion...