in the summer of 19 41, colonel eisenhower became chief of staff to walter krueger, who's army was preparingrticipate in the most realistic war maneuvers ever held by american troops. in these maneuvers over louisiana as america drew more soldiers, eisenhower's task was to work out a defense against an invading mechanized force. soon after the maneuvers were over, he was promoted to brigadier general. within days came the bombing of pearl harbor. from almost this moment on, the fate of the nation and eisenhower would be inexorably bound together. called to washington in the -- announcer: harry truman referred to his wife as "the boss" she spent a good part of her white house years home in missouri. beth truman tonight at 8:00 p.m. eastern on c-span's original series first ladies, influence an image, examining the public and private lives of the women who served the position as private lady. -- as first lady. tonight at 8:00 p.m. eastern on american history tv on c-span 3. announcer: c-span's steering cities across the country exploring american history. up next, a look at our recent visit to