It may have been that I neglected to register with the Selective Service System when I turned eighteen, in 1960, as the law required. Or maybe my student deferment, available to college students in those years, was rescinded when I dropped out for a semester in my junior year. But sometime in the spring of 1964, I received a notice to report for a preinduction physical — the first step toward being drafted into the armed forces. That I can’t remember clearly the sequence of events may be a result of the terror I experienced at this and my urgent…