I do not think that this is good news in any way, shape or form. The Media has a rediculous level of influence in this country and, despite what Labour say, it does colour opinion, electoral outcomes and hence policy.
Already, Armed Forces = Army. Commentators talk about the 'Troops', little or no mention of the rest. This man will be totally Army-centric and all policy will focus solely on Afghanistan, an unwinnable war IMHO. Lack of long term, multi threat, Purple thinking will be a casualty that could affect the Armed Forces for decades, and not in a good way.
I think he will also quickly find himself out of his depth in the bear pit that is Westminster.
Not good news at all.