This is a 1982 textbook for those sitting the GCSE Classical Civilisation exam. It is still utilised by the OCR Board for one of their ten literature topics. Until recently it has been very difficult to obtain, but is now available again in a digital reprint (2008).
It covers the Persian War as described in Books 5-9 of Herodotus' Histories. To simplify the subject for schoolchildren, only the key sections are translated, and even these may be subject to abridgment. Shepherd provides a useful introduction and writes his own bridging passages to cover missing sections. The translation is not as entertaining as that by Robin Waterfield (ISBN 0192824252) but it is better adapted to a younger audience being introduced to Herodotus for the first time.
Alas, Amazon continue to confuse this book with Rawlinson's complete translation of Herodotus' Histories, 'The Persian Wars', as revealed by their links to 'Other Editions'.