By this time, Sherman had received an indication from Grant that he was favorably considering the march to Savannah. He set his mind on the short-term goal of pursuing the swiftly moving Hood. He directed Thomas to come forward from Nashville to block Hood's advance. To bolster Thomas's effort, Sherman ordered the IV Corps under Stanley to Chattanooga and the XXIII Corps under Schofield to Nashville, as well as Maj. Gen. Andrew J. Smith's XVI Corps from Missouri to Nashville. By November 10, the remainder of Sherman's troops were en route back to Atlanta. Forrest's West Tennessee raid (October 16 – November 16) One of the critical Federal supply lines in Tennessee was to use the Tennessee River, offload supplies at Johnsonville, and then ship them by rail to Nashville. Lt. Gen. Richard Taylor ordered Maj. Gen. Nathan Bedford Forrest on a cavalry raid through Western Tennessee to destroy that supply line. The first of Forrest's men began to ride on October 16; Forrest himself began moving north on October 24 and reached Fort Heiman on the Tennessee River on October 28, where he emplaced artillery. On October 29 and October 30, his artillery fire caused the capture of three steamers and two gunboats. Forrest repaired two of the boats, Undine and Venus, to use as a small flotilla to aid in his attack on Johnsonville. On November 2, Forrest's flotilla was challenged by two Union gunboats, Key West and Tawah, and Venus was run aground and captured. The Federals dispatched six more gunboats from Paducah, Kentucky, and on November 3 they engaged in artillery duels with strong Confederate positions on either end of Reynoldsburg Island, near Johnsonville. The Federal fleet had difficulty attempting to subdue these positions and were occupied as Forrest prepared his force for the attack on Johnsonville. On the morning of November 4, Undine and the Confederate batteries were attacked by three Union gunboats from Johnsonville and the six Paducah gunboats. Undine was abandoned and set on fire, which caused her ammunition magazine to explode, ending Forrest's brief career as a naval commander. Despite this loss, the Confederate land artillery was completely effective in neutralizing the threat of the Federal fleets. Forrest's guns bombarded the Union supply depot and the 28 steamboats and barges positioned at the wharf. All three of the Union gunboats were disabled or destroyed. The Union garrison commander ordered that the supply