Essays by respected military historians, including James McPherson, Josiah Ober, Theodore K. Rabb, and Geoffrey Parker, consider the consequences if history had turned out differently, such as if the assassination plot against Lincoln had failed, if FDR had been assassinated, or if Patton had struck into the heart of Germany.

Five leading historians--Stephen Ambrose, David McCullough, James McPherson, Richard White, and Gordon Wood--along with Roger Mudd, provide personal analyses of key eras in American history, including World War II, the Civil War, Westward Expansion, the Industrial Era, and the American Revolution. TV tie-in. Simultaneous.