The Civil War was the bloodiest conflict in our country's history and Americans still debate every dimension of it. Yet only a few have explored the naval side, where it can be argued that the war was won. Spencer Tucker's much-needed Short History broadens our view of the conflict by illustrating exactly how naval operations decided the outcome of the war. Tucker describes how technology revolutionized naval warfare; he explains how Union blockades prevented much-needed supplies from reaching the Confederacy, ultimately permitting the Union war of attrition to succeed; and he tells how Confederate commerce raiders, while very active, did not alter the balance of the conflict. Finally, he shows how naval as well as joint army-navy operations reduced important Confederate strongholds, further demoralizing the Southern war effort.