The product is a 1996 hardcover reprint of "Census of Pensioners : For Revolutionary or Military Services, 1840" by the U.S. Department of State Staff. Published by Genealogical.Com, this book falls under the genres of history and social science, specifically focusing on military/veterans and demography. With a total of 577 pages, it includes a general index and provides valuable information for those interested in genealogy and historical research related to military services.