Earl J. Hess <br/><br/>
Trench Warfare Under Grant and Lee  Field Fortifications in the Overland Campaign 

 -  The University of North Carolina Press  2007 
 - Civil War America .
<br/><br/><label>ISBN: </label>9780807831540 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Civil War Period (1850-1877)<br/> United States <br/>Fortification, Field--History--19th century,Fortification--History--19th century.--Virgi,Overland Campaign, Va., 1864<br/>HISTORY