By A.I. Akram. Sword of Allah Khalid bin al Waleed : A Biographical Study of One of the Greatest Military Generals in History. A Biographical Study of the Greatest Military General in History. Khalid bin Al-Waleed was one of the greatest generals in history, and one of the greatest heroes of Islam. And about Whom Abu Bakr (RA) said 'Women will no longer be able to give birth to the likes of Khalid bin Al-Waleed.' (Ibn Kathir, Al-Bidayah wan-Nihayah, The original title of the book, "The Sword of Allah: Khalid bin Al-Waleed, His Life and Campaigns" was written by the late Lieutenant-General A.I. Akram of the Pakistan Army, in October 1969. The author learned Arabic in order to draw on the earliest historical sources and he visited every one of Khalid's battlefields in order to draw analyses from the viewpoint of military strategy, including reconciling conflicting historians' accounts. An important source on early Islam and the conduct and ettiquette required even in conflict. Maktabah Publications (2007), English, Hardcover: 512 pages.