After the Red River expedition little is left to say, in a work of this scope, of the operations of the Mississippi Squadron during the rest of the war. Admiral Porter was relieved during the summer, leaving Captain Pennock in temporary charge. Acting Rear-Admiral S.P. Lee took the command on the 1st of November. The task and actions of the squadron were of the same general character as those described in Chapter VI. Guerillas and light detached bodies of the enemy continued to hover on the banks of the Mississippi, White, Arkansas, Tennessee, and Cumberland Rivers. The Red River was simply blockaded, not occupied, and much of the Yazoo Valley, having no present importance, had been abandoned to the enemy. The gunboats scattered throughout those waters were constantly patrolling and convoying, and often in action. The main operations of the army being now far east of the Mississippi, the work and exposure of the boats became greater. Masked batteries of field pieces were frequently sprung upon them, or upon unarmed steamers passing up and down; in either case the nearest gunboat must hasten and engage it. Weak isolated posts were suddenly attacked; a gunboat, usually not far off, must go to the rescue. Reconnoissances into the enemy's country, as the Yazoo Valley, were to be made, or troops carried in transports from point to point; gunboats went along with their heavy yet manageable artillery, feeling doubtful places with their shells and clearing out batteries or sharpshooters when found. The service was not as easy as it sounds. It would be wrong to infer that their power was always and at once recognized. Often they were outnumbered in guns, and a chance shot in a boiler or awkward turn of a wheel, throwing the vessel aground, caused its loss. Even when victorious they were often hardly used. The limits of this book will permit the telling of but two or three stories.