Thursday, November 7, Col. Joshua W. Sill started the northern prong of the Big Sandy expedition toward John's Creek. From there he was to veer south for about forty miles and gain the rear of the enemy at Pikeville. The following morning, Nelson took the main column of 3,600 men toward Pikeville on the Old State Road (Rt. 460). Heavy rain fell in torrents as they neared Ivy Mountain, a hogback, hill about long. The West Levisa Fork of the Big Sandy River restricted movement on the right the seven-foot wide path and knee-deep mud forced the artillery to unlimber their guns and rig them so they could follow the infantry forward in a single file. About west of Pikeville, the advance guard disappeared in the elbow of the path as it turned down toward the crossing at Ivy Creek. Directly to their front, there were 250 Confederates some up the hill and hidden behind rocks, trees, and bushes. About 1:00 p.m., that hillside exploded with blue smoke from the doubled-barreled shotguns and old muskets carried by the Confederates. In the next instant, four Union soldiers were dead and another 13 lay on the ground wounded. Nelson rushed forward with his saber drawn, climbed up on a conspicuously located rock, and told his men "that if the Rebels could not hit him they could not hit any of them." He ordered the 2nd Ohio Infantry and 21st Ohio Infantry to push up side of the mountain and flank the enemy position from the north. At the same, Nelson had two light artillery pieces take a position near mouth of Ivy Creek and West Levisa Fork and fire directly into the enemy breastworks.