Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Griffin as a historical novelist

Griffin has created an action filled and entertaining story against some of the darkest days in the history of this country. His main characters are products of the novel and he strives to keep this obvious. However, the surrounding details of his research and their presentation is most unique in that his facts are very often dead bang on target and demonstrate an understanding of the times and the interaction of the personalities of senior officers in the naval service.This book is strongly recommended to those who want to get a feeling for these most trying times.