Telling the story of the Civil War's Mississippi River Campaign through the experiences of leading officers, ordinary soldiers, and civilians, this book explains how the river campaign came to be one of the key tenets of the Union's strategy and a fundamental contributor to the war's ultimate outcome. It describes the Union's drive down the Mississippi River from Cairo, Illinois, the drive up the river from the Gulf of Mexico, and the capturing of key cities and rebel fortifications along the way, including New Orleans, Baton Rouge, Memphis, Vicksburg, and finally, Port Hudson, Louisiana. The text is supplemented with 24 historical photographs from the Library of Congress and the National Archives.