"Playing With The Enemy: A Baseball Prodigy, World War II, and the Long Journey Home" by Gary W. Moore

Gene Moore was a small-town Illinois farm boy whose passion for “America’s Pastime” made him a local legend. It wasn’t long before word spread, and the Brooklyn Dodgers came calling on the teenage phenom who could hit a ball a country mile. Headed for stardom, and his dream within reach, Gene’s future in the majors was cut short by World War II. In 1944, after joining the US Navy, Gene found himself on a top-secret mission: guarding German sailors captured from U-505, a submarine carrying one of the infamous Enigma decoders. Stuck with guard duty, he decided to bide the time by doing what he loved. Gene taught the POWs how to play baseball. It was a decision that would change Gene’s life forever.
 
The story of a remarkable man told by his inspired son, “Gene’s journey from promise to despair and back again, set against a long war and an even longer post-war recovery . . . [is] a 20th-century epic that demonstrates how, sometimes, letting go of a dream is the only way to discover one’s great fortune” (Publishers Weekly, starred review).