Flag of Mercy (1942) is a History film that follows the 1939 dramatic short "Angel of Mercy," about Red Cross founder Clara Barton, is reedited to relate the story to America's involvement in World War II. Edited from Angel of Mercy (1939) Flag of Mercy is not currently listed with streaming providers in your selected region, but availability can change over time. Fans of history movies may also want to explore similar titles below.