In three years, there will be a large turnover in the military. It will be filled with the ranks of gays and Obama voters.
You are potentially quite right -- in just a few years, Oliver Cromwell built an army from the ground up called the New Model Army, and that army not only fought King Charles I, but defeated him -- and then executed him.
Cromwell's men were religiously motivated. Obama's "New America" army would be just as motivated -- by hatred of Whitey, of straights, of "bitter clingers" who don't want to pay "their fair share". Never doubt the power of ruthless men to flog their orcs forward.