History of the Second World War, (United Kingdom Military Series). Edited by Sir James Butler. The War at Sea, 1939–1945, Volume III, The Offensive. Part I, 1st June 1943–31st May 1944. By S. W. Roskill. (London: H. M. Stationery Office; distrib. by British Information Services, New York. 1960. Pp. xv, 413. $8.40 postpaid.) and White Ensign: The British Navy at War, 1939–1945. By S. W. Roskill. (Annapolis, Md.: United States Naval Institute. 1960. Pp. 480. $4.50.)