Beersheba should be captured in one day, a formidable undertaking owing to the situation of the town, the high entrenched hills around it and the long marches for cavalry and infantry before the attack; and in drawing up the scheme based on the Commander-in-Chief's plan, the commanders of XXth Corps and Desert Mounted Corps had always to work on the assumption that Beersheba would be in their hands by nightfall of the first day of the attack. General Barrow's Yeomanry Mounted Division was to remain at Shellal in the gap between XXth Corps and XXIst Corps in case the enemy should attempt to attack the XXth Corps' left flank. Having dealt with the enemy in Beersheba, General Chetwode with mounted troops protecting his right was to move north and north-west against the enemy's left flank, to drive him from his strong positions at Sheria and Hareira, enveloping his left flank and striking it obliquely. While the XXth Corps was moving against this section of the enemy line, Desert Mounted Corps was to bring up the mounted division left at Shellal, and passing behind the XXth Corps to march on Nejile, where there was an excellent water supply, and the wadi Hesi, so as to threaten the left rear and the line of retreat of the Turkish Army. It was always doubtful whether XXth Corps would be able to close up the gap between it and the XXIst Corps owing to the length of its marches and the distance it was from railhead, and the scheme therefore provided that the XXIst Corps should confirm successes gained on our right by forcing its way through the tremendously strong Gaza position to the line of the wadi Hesi and joining up with Desert Mounted Corps. A considerable number of XXth Corps troops would then return to the neighbourhood of railhead and release the greater part of its transport for the infantry of XXIst Corps moving up the Maritime Plain. This, in summary form, was the scheme General Allenby planned before the middle of August, and though the details were not, and could not be, worked out until a couple of months had passed, it is noteworthy as showing that, notwithstanding the moves an enterprising enemy had at his command in a country where positions were entirely favourable to him, where he had water near at hand, where the transport of supplies was never so serious a problem for him as for us when we got on the move, and where he could make us fight almost every step of the way, the Commander-in-Chief foresaw and provided for every eventuality, and his scheme worked out absolutely and entirely 'according to plan,' to use the favourite phrase of the German High Command.