"As World War I swept Europe, young Americans prepared to join the cause ... well, half of them did. Women were supposed to stay prim and proper at home. But Adeline and Augusta -- ahem, Addie and Gussie -- Van Buren had been taught to skate, swim, and even box. They knew women could do much more than sit around in petticoats. The sisters decided to prove this by writing strongly worded letters. No, no, of course not, Addie and Gussie were fighters!...