This book is part of the G. I. series of short illustrated studies covering a period or a series of campaigns. All of these books are vertical studies covering a period of years. Though sometimes the illustrations serve to identify individual items of equipment, these works are not intended for that purpose. They are not catalogs intended for materiel collectors. They are of such a length and of such a level of detail that they will serve the purposes of the general reader with a curiousity about what grandaddy did in WW II or great great great grandaddy in the Civil War and what he looked like and how he lived. This is not to say that the specialist such as myself cannot find useful nuggets herein. I can. I use these for general surveys of periods I do not study in detail, such as the Civil War, and the War With Mexico, etc. And to look up the odd facts. I have yet to be disappointed with any of them.