Included in this biographical encyclopedia are Union and Confederate naval officers down to the rank of mate; enlisted sailors who won the Medal of Honor, or otherwise distinguished themselves or who wrote accounts of life on the gunboats; army officers and leaders who played a direct role in combat along Western waters; political officials who influenced river operations; civilian steamboat captains and pilots who participated in wartime logistics; and civilian contractors directly involved, including shipbuilders, dam builders, naval constructors and munitions experts. Each of the biographies includes (where known) birth, death and residence data; unit organization or ship; involvement in the river war; pre- and post-war careers; and source documentation. Hundreds of individuals are given their first historic recognition.