This Day in History: 0000-10-11
11 Oct – Swiss Protestant pastor and reformer Huldrych Zwingli was killed in action fighting soldiers from Roman Catholic cantons (1531).
11 Oct – The Second Vatican Council, which heralded groundbreaking changes in the Catholic Church, began in Rome under Pope John XXIII (1962). It ended in December 1965.
11-12 Oct – A US Navy task force under Robert L Ghormley defeated a Japanese task force under Gunichi Mikawa in the Battle of Cape Esperance (1942).