Vincent P. O'Hara is an independent naval historian and the author of thirteen works, including Six Victories: North Africa, Malta, and the Mediterranean Convoy War, November 1941-March 1942, and Clash of Fleets: Naval Battles of the Great War, 1914-18, with Leonard R. Heinz. He holds a history degree from the University of California, Berkeley, and lives in Chula Vista, California.
Leonard R. Heinz worked for many years as a financial services lawyer while maintaining an active interest in military and naval history. He has written articles and designed wargames on naval topics. He holds a history degree from the University of Pennsylvania, and lives in Corrales, New Mexico.