In 1940, Hemingway and Pauline were divorced, and he married writer Martha Gellhorn. They toured China, then established a residence in Cuba. When World War II began, Hemingway volunteered his services and his fishing boat, the Pilar, and cooperated with United States naval intelligence as a German submarine spotter in the Caribbean.
Wanting a still-more-active role in the war, Hemingway soon was a 45-year-old war correspondent barnstorming through Europe with the Allied invasion troops — and sometimes ahead of them. It is said that Hemingway liberated the Ritz Hotel in Paris and that when the Allied troops arrived, they were greeted by a notice on the entrance: "Papa Hemingway took good hotel. Plenty stuff in the cellar."
Following yet another divorce, this one in 1944, Hemingway married Mary Welsh, a Time magazine correspondent. The couple lived in Venice for a while, then returned to Havana, Cuba. In 1950, Across the River and into the Trees appeared, but it was neither a critical nor a popular success. His short novel The Old Man and the Sea (1952), however, restored Hemingway's literary stature, and he was awarded the 1953 Pulitzer Prize in literature.
