In the second volume, Churchill replaces Sir Claude Auchinleck as commander-in-chief with Field Marshal Harold Alexander, and places Bernard Montgomery over the Eighth Army. Prior to the changes of command, Auchinleck stopped Rommel's Afrika Korps for the first time at the first battle of Alamein in July, 1942. Still, the Axis forces remained dangerous. The pair's new commands coincided with the arrival of materiel sufficient to give the Allies overwhelming superiority in the field. Montgomery duly planned for a second battle at Alamein six months after the first. The eventual encounter gained a decisive second desert victory, the first since O'Connor's against the Italians nearly two years before. The victory signaled the beginning of the end of the Axis in North Africa.