We recommend this legally free ebook:

  • Peter’s Rock in Mohammed’s Flood: from St. Gregory the Great to St. Leo III, being the Seventh Volume of The Formation of Christendom, by Thomas William Allies (London: Burns & Oates; New York: Catholic Publications Society, 1890). Available at Open Library and Internet Archive (Digitizing sponsor: MSN, Book contributor: Kelly Library, University of Toronto).

Posted in remembrance of the Battle of Yarmouk, which ended on 20 August 636 AD. In that momentous engagement, the Islamic Caliphate completed its conquest of Christian Syria by decisively defeating the Christian Roman Empire. Thus began the first wave of Islamic conquest and the fall of once-Christian lands throughout the Mediterranean littoral, and the near-conquest of Europe as well. Spain, Sardinia, Corsica and central and southern Italy would be retaken in the 11th-15th centuries; but, despite their temporary recovery in the Crusades, Syria, Palestine, Egypt, Libya, Africa (Tunisia), Numidia (Algeria), Mauretania (Morocco) would be lost to Christendom altogether: the birthplaces of Christ and His Church, of His holy apostles, of Saints Cyprian and Augustine, of Saints Cyril and Athanasius, and of Christian monasticism.

“So now, O LORD our God, save us from his hand, that all the kingdoms of the earth may know that thou alone art the LORD.” (Isaiah xxxvii, 20)