To Patrick Hemingway, I extend my sincere gratitude and appreciation for considering me for this project; his suggestions for a number of literary works to include in this volume, his answers to my many queries about my grandfather’s experiences in war, and his thoughtful Foreword were an invaluable contribution. I offer my sincere thanks to Carol Hemingway, especially for her assistance with passages from The Fifth Column; to Michael Katakis for the inspiration for this book and for his good counsel and support; to Megan Desnoyers and James Roth of the Hemingway Archives at the John F. Kennedy Library for their help with research pertaining to unpublished materials in the collection, and to Allan Goodrich and James Hill at the audiovisual archives for indispensable assistance with the photographic material; to the Ernest Hemingway Foundation, Inc., for permission to publish excerpts from the letters, and to J. Gerald Kennedy for facilitating this permission; to Simon & Schuster for permission to reprint excerpts from published works, and to Lydia Zelaya and Jeff Wilson for facilitating this permission; to Charles Scribner III for his enthusiasm and efforts, and to Brant Rumble, John McGhee, and Gillian Blake for their assistance; to Cornell Capa for permission to publish the photographs by his brother, Robert Capa, and to Anna Winand for facilitating this permission; to Getty Images for permission to publish the photograph by Lloyd Arnold, and to Valerie Zars for facilitating this permission; to A. E. Hotchner for permission to publish his photograph from his publication; to Demetri Villard for permission to publish the photograph taken by his father, Henry S. Villard; to President Fidel Castro for thought-provoking discussion about my grandfather and about warfare; to Valerie Hemingway for her specific and valuable comments about Ernest Hemingway in Spain, and for her general support; to Joseph Czapski for his encouragement and helpful suggestions; to Henry Gornowicz for his copy of the film The Spanish Earth; and to Patricia Czapski, Gladys Rodriguez, James Nagel, Brendan Hemingway, Robin Smith, Brian Gaisford, Achille Dimatteo, Dominic Tripoli, Angela Hemingway, Steven Gold, George Plimpton, Jenny Phillips, Congressman James McGovern, and, in memoriam, Gregory Hemingway, Jack Hemingway, and John Groth. Finally, as always, I reserve my warmest note of appreciation for my wife, and my muse, Colette, for her critical reading of this text and for her patience and essential support throughout this endeavor.