. >> constituency, representation in congress, professor kristina miller is the author. cambridge university press is the publisher. >> this is book tv on c-span2, currently we are at the university of maryland, a college park maryland and of foreign bank library in the katherine anne porter room and we are talking with the university of maryland professors who are also authors joined by a history professor jon sumida, who has written this book, "decoding clausewitz: a new approach to on war." professor jon sumida, who was coral clausewitz? >> he fought against napoleon and the entire and first as a teenager in 79 these leader to be made great officer in the battle in 1906 and was subordinate to the chief of staff of the army and was a participant in the reform of the prussian army after its three defeat. in 1812 he resigned the commission because he disagrees with the king in terms of their decision to be an ally of france and invade russia, so he goes over to the russian army and serves as an adviser to the czar and is attached to senior russian commanders in the battl