January 21, 1525: Conrad Grebel (Ulrich Zwingli's former protege) rebaptizes George Blaurock, a former monk, in a secret, illegal meeting of six men in Zurich. This meeting is now considered the birth of the Anabaptist movement (see issue 5: Anabaptists).
January 21, 1549: In the first of four Acts of Uniformity, the English Parliament requires all Anglican public services to exclusively use of The Book of Common Prayer.
January 21, 1621: Pilgrims leave the Mayflower and gather on shore at Plymouth, Massachusetts, for their first religious service in America (see issue 41: The American Puritans).
June 18, 1464: Pope Pius II begins a crusade against the Turks. He died on the way to a rendezvous with his allies, and the crusading mentality died with him.
June 18, 1546: Protestant Anne Askew is condemned in England for denying the doctrine of transubstantiation (the idea that sacramental bread and wine turn into the body and blood of Christ). When asked by her accuser, "Sayest thou that priests cannot make the body of Christ?" she answered, "I have read that God made man; but that man can make ...