James Caughey was a Methodist minister and evangelist who was active in the United States, England and Canada. An imposing and effective preacher, he conducted highly emotional revival meetings at which many of his audience were converted or reaffirmed their faith. This brought him into some conflict with the more respectable members of the Methodist church in Britain.

William Booth was an English Methodist preacher who, along with his wife, Catherine, founded the Salvation Army and became its first General (1878–1912). The Christian movement with a quasi-military structure and government founded in 1865 has spread from London to many parts of the world. It is known for being one of the largest distributors of humanitarian aid.