This book is a history of the major actions and beliefs and the changing concepts of Protestantism, which it should be pointed out, is one and only one branch of Christianity. In the following pages the history of Protestantism with all its ups and downs is recorded to the present day, beginning at the time of the Middle Ages and of the dawn of the Renaissance. In an age when the future of man may depend on working together in a common struggle, this history, unvarnished by ,myth, has perhaps never deserved closer scrutiny.