Under Marching Orders: A Story of Mary Porter Gamewell is a biographical novel written by Ethel Daniels Hubbard. The book tells the story of Mary Porter Gamewell, a missionary who lived in China during the late 19th and early 20th centuries. Mary Porter Gamewell was a remarkable woman who dedicated her life to spreading Christianity and helping the Chinese people. The novel begins with Mary's childhood and follows her journey to becoming a missionary...