Sandra Bullock researched her role of Agnes Von Kurowsky by reading her dairies that she kept during the war and reading the love letters between her and Ernest Hemingway.
Agnes Von Kurowsky was the inspiration for the character Catherine Barkley in "A Farwell To Arms".
Henry Villard's own son was the driving force behind getting this movie made.
In real life, Agnes Von Kurowsky and Ernest Hemingway never saw each other again after the war.
The closing epilogue states: "Agnes von Kurowsky's long and distinguished career with the American Red Cross continued until the end of World War II. She remained unmarried until she was thirty-six, and lived to be ninety-two. Ernest Hemingway won the Nobel Peace Prize for Literature in 1954. One of his great novels, A FAREWELL TO ARMS, was inspired by his experiences in Italy during World War I. He married four times and took his own life in 1961."