Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a classic

Grimsley's Hard Hand of War was published 8 years ago, and remains the best account of evolving Federal war policy towards the Confederacy over the 4 years of the American Civil War. Grimsley carefully outlines the evolution from the conciliatory strategy of the first year of the war through the pragmatic policies of the mid period, and finally to the "hard war" which is most associated with General Sherman. his argument is nuanced and well documented. Highly Recommended.