This text is an in-depth analysis of the History of the Peloponnesian War by Thucydides, written by German classicist Ernst Friedrich Poppo. Poppo takes a critical approach to Thucydides' work and delves into the historical accuracy of the events depicted in the text. This piece is essential reading for anyone interested in ancient Greek history and historiography. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.