books.google.co.uk - Tank technology had remained virtually unchanged since World War I, but conditions in North Africa revealed the need for a faster, more maneuverable machine with increased armor and armament - and the Cormwell Cruiser was born. This book examines the design and development of the Cromwell....http://books.google.co.uk/books/about/Cromwell_Cruiser_Tank_1942_50.html?id=aHzvwaNv3vQC&utm_source=gb-gplus-shareCromwell Cruiser Tank 1942-50