Impeachment is not going to happen. What we need is Egypt style demonstrations until the military gets fed up and removes him, them, all of them.
What you stated (military removal of Obama) is FAR less likely than impeachment. In fact what you stated would never happen. The military will not remove a civilian President.
I agree that impeachment does not seem likely as of now given the spineless Republicans in charge. However it is at least possible with proper leadership. The first and second steps however do not involve impeachment. The first step is to call for impeachment hearings. That is where we are now. The second step is to conduct impeachment hearings to summarize and document the crimes.