In 1937 and 1938, Ernest Hemingway made four trips to Spain to cover its civil war for the North American News Alliance wire service and to help create the pro-Republican documentary film The Spanish Earth. Hemingway's Second War is the first book-length scholarly work devoted to this subject. Drawing on primary sources, Alex Vernon provides a thorough account of Hemingway's involvement in the Spanish Civil War, a messy, complicated, brutal precursor...