My new book, The Girls Who Stepped Out of Line, features the stories of a handful of women who changed the course of war during the interminable years of 1940 to 1945. Over the course of my research, I encountered thousands.

And I went deep into their life stories—those who survived the Holocaust and the Japanese internment camps; those who fought in the Resistance, smuggling people out of harm’s way; and those who served in uniform or as war correspondents.