Question: I think Michael ever had to "think or plan" anything for a war... he never went to war... he wiped everyone out before it got to war, right? or is there time he was at war?
Well Michael was in a war alongside of Sonny. He had to go to the matresses himself by fleeing the country and hiding out in Sicily.
But if you are asking if he was ever in a war while he was the Don, then the answer is no. He was never in the type of war where the family had to go to the matresses. The closest that he probably came, to that kind of a situation, was the hit attempt on him in Tahoe. In the non-traditional sense the family did go to the matresses because the Tahoe compound was locked down and Michael fled the compound to seek out Roth and Pentangeli. But in the traditional sense, he really never had to go to the matresses while he was The Don.
