November 24 was dark, with low clouds, fog, and drizzling rain. Sherman's force crossed the Tennessee River successfully in the morning, then took the set of hills at the north end of Missionary Ridge, although he was surprised to find that a valley separated him from the main part of the ridge. Alerted by Grigsby's cavalry that the enemy had crossed the river in force, Bragg sent Cleburne's division and Wright's brigade to challenge Sherman. After skirmishing with the Confederates, Sherman ordered his men to dig in on the hills he had seized. Cleburne, likewise, dug in around Tunnel Hill.