In the Balance (Worldwar, Book One)

Suppose Roosevelt, Stalin, Churchill, Hitler, and Hirohito had united to conquer an even greater foe?
No one could top their power-not the Germans, not the Japanese, not the Russians, not the United States.
From Pearl Harbor to panzers rolling through Paris to the Siege of Leningrad and the Battle of Midway, war seethed across the planet as flames of destruction rose higher and hotter.
And then, suddenly, the real enemy came.
The invaders seemed unstoppable, their technology far beyond human reach. And never before had men been more divided. For Jew to unite with Nazi, American with Japanese, and Russian with German was unthinkable.
But the alternative was even worse.
As the fate of the world hung in the balance, slowly, painfully, humankind took up the shocking challenge. . . .

Harry Turtledove is the award-winning author of the alternate-history works The Man with the Iron Heart, The Guns of the South, and How Few Remain (winner of the Sidewise Award for Best Novel); the Hot War books: Bombs Away, Fallout, and Armistice; the War That Came Early novels: Hitler's War, West and East, The Big Switch, Coup d'Etat, Two Fronts, and Last Orders; the Worldwar saga: In the Balance, Tilting the Balance, Upsetting the Balance, and Striking the Balance; the Colonization books: Second Contact, Down to Earth, and Aftershocks; the Great War epics: American Front, Walk in Hell, and Breakthroughs; the American Empire novels: Blood and Iron, The Center Cannot Hold, and Victorious Opposition; and the Settling Accounts series: Return Engagement, Drive to the East, The Grapple, and In at the Death. Turtledove is married to fellow novelist Laura Frankos. They have three daughters-Alison, Rachel, and Rebecca-and two granddaughters, Cordelia Turtledove Katayanagi and Phoebe Quinn Turtledove Katayanagi.