Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Typical INtroductory Study

The Vanguard series is intended to give a brief introducton to various weapons systems used in the major wars of the 20th century. As such, they include color plates of various paint schemes on campaign, a sectional drawing of a representative vehicle, and plenty of B&W photos in the text. All this is wrapped in an elementary text based on new research in newly opened archives and presented in an attractive format. Useful to war gamers, students, and model makers.