By Nigel Cawthorne ISBN 0-715327445; $16.99; 288 pages; Paperback World War II is the most popular period for history readers with an increasing demand for accounts of personal experiences Similar in style to the Voices from series, which have sold over 45,000 copies worldwide Nigel Cawthorne has written more than 20 books on military history and worked as an advisor for the BBC on the subject