Eugene Bach is a pseudonym for a member of the Chinese underground church who does not wish to be identified. He was trained in U.S. military special operations and served two tours in the Persian Gulf and Asia-Pacific region, serving primarily as a member of a rapid response team focusing on targeted threat elimination, counterterrorism, and security. He has been working with the underground church in China for more than fifteen years, helping them to establish forward mission bases in closed countries around the world, including Iraq and Syria. Eugene leads the Chinese mission movement called Back to Jerusalem, which provides essential support for Chinese missionaries in Africa, Asia, and the Middle East, and he has written books about the underground church in China, North Korea, and Iran.