How ordinary aging became evidence against Nagumo

Some assessments used Nagumo's visible aging and arthritis to reinforce a portrait of an officer unsuited to carrier command. At fifty-four, he had spent much of his life at sea and had practiced kendo and other martial arts when younger. Neither age nor joint pain by itself demonstrates intellectual rigidity or command failure. A judgment already shaped by Midway can turn ordinary biographical details into supposed evidence of professional inadequacy.