![Jack Hemingway entered the army as an officer with the military police; the eldest son of writer Ernest Hemingway, he spent most of his war assigned to the CIA precursor, the OSS. (Ernest Hemingway Photograph Collection/John F. Kennedy Presidential Library and Museum, Boston)](https://www.historynet.com/wp-content/uploads/2018/09/JackHemingwaysWar_1.jpg)
Ernest Hemingway Photograph Collection/John F. Kennedy Presidential Library and Museum, Boston (Ernest Hemingway Photograph Collection/John F. Kennedy Presidential Library and Museum, Boston)
Ernest Hemingway Photograph Collection/John F. Kennedy Presidential Library and Museum, Boston