Men receive the holy orders to feed the Church by the word and grace. Retrieved b c Agnew, John (12 February 2010). As of 2008, the Catholic Church has 2,795 dioceses. Note 10 In the Archdiocese of Milan, with around five million Catholics the largest in Europe, 211 Mass is celebrated according to the Ambrosian Rite. 366 In 1949, the Communist victory in the Chinese Civil War led to the expulsion of all foreign missionaries. Relatively small in terms of adherents compared to the Latin Church, are the 23 self-governing Eastern Catholic Churches with a combined membership.3 million as of 2010. 106 In particular, the Bishop of Rome (the pope) is considered the successor to the apostle Simon Peter, a position from which he derives his supremacy over the church.