The XXIst Corps' plan was as follows: At dawn on December 21 a heavy bombardment was to open on all the enemy's trenches covering the crossings, the fire of heavy guns to be concentrated on enemy batteries and strong positions in the rear, while ships of the Royal Navy bombarded two strong artillery positions at Tel el Rekket and El Jelil, near the coast. When darkness fell covering troops were to be ferried across the river, and then light bridges would be constructed for the passage of larger units charged with the task of getting the Turks out of their line from Hadrah, through El Mukras to Tel el Rekket. After these positions had been gained the engineers were to build pontoon bridges to carry the remainder of the Division and guns on the night of the 22nd-23rd December, in time to advance at daylight on the 23rd to secure a defensive line from Tel el Mukhmar through Sheikh el Ballatar to Jelil. On the right of the 52nd Division the 54th Division was to attack Bald Hill on the night of 21st-22nd December, and on the following morning assault the trench system covering Mulebbis and Fejja; then later in the day to advance to Rantieh, while the 75th Division farther east was to attack Bireh and Beida. This plan was given to divisional commanders at a conference in Jaffa on December 12. Two days later General Hill submitted another scheme which provided for a surprise attack by night with no naval or land artillery bombardment, such a demonstration being likely to attract attention. General Hill submitted his proposals in detail. General Bulfin gave the plan most careful consideration, but decided that to base so important an operation on the success of a surprise attack was too hazardous, and he adhered to his scheme of a deliberate operation to be carried through systematically. He, however, gave General Hill permission to carry out his surprise attack on the night of December 20, but insisted that the bombardment should begin according to programme at daylight on the 21st unless the surprise scheme was successful.