Blunders on blunders

We are now told that although we don't need more American troops in Iraq, we do need more troops/police/border patrols, provided by other nations or by Iraqis. And so why did we disband the Iraqi Army, and why did we disable all midrange Baathist civil servants? I'm not crazy in wondering these things. A former Iraqi Army officer, now out of a job, is too.