From the moment 17-year-old Donald Trump was named a captain for his senior year at New York Military Academy, he ordered the officers under his command to keep strict discipline. Shoes had to be shined. Beds had to be made. Underclassmen had to spring to attention. Then, a month into Trump’s tenure in the fall of 1963, came an abrupt change. The tall, confident senior with a shock of blond hair was removed from that coveted post atop A Company and transferred to a new job on the school staff — another prestigious assignment, but one with no command responsibilities....