The final objective of the XX Corps, as described in the "XX Corps Instructions", was to destroy the opposition units at Beersheba, in cooperation with the Desert Mounted Corps. The instructions continued, "The objective of the attack by the XX Corps on Z day is the capture of the line of works between the Khelasa–Beersheba road and the Wadi esh Sabe, the capture of the enemy guns between Beersheba and the trenches west of the town, and in co-operation with the cavalry to drive the enemy from the remainder of his defences at Beersheba". However, it is claimed, "West of Beersheba the XX Corps had all its objectives and could without doubt have captured Beersheba itself before the mounted troops." The objective of the infantry divisions was not to capture Beersheba, but to keep the main garrison occupied while the Desert Mounted Corps captured the town. The official British historian stated, "The capture of Beersheba itself was the task of the Desert Mounted Corps, which required the water in the town for its horses". "XX Corps Instructions" stated: "outposts will be placed approximately on the 'Blue Line' (Tracing "A") to cover the consolidation of the position and reorganization of the attacking troops." No units were to go beyond the 'Blue Line' without orders or to capture guns.