Instruct: Classify a review into positive or negative sentiment.
Query: Hard corps

This is an excellent over view of the 3 Marine services serving in Vietnam--US, Korean, Vietnamese. Color paintings show examples of their Uniforms and equipment, and the the author has also included a brief history of each. The author sheds some light on the foreign services especially, and may have presented details that are unknown to the average militaria buff--only criticism maybe that the format is too short--a longer book would have been better.