If and when Vaal Krantz was captured all six batteries were to move across No. 3 bridge and take up positions on the hill, whence they could prepare and support the further advance of Clery’s Division, which, having crossed, was to move past Vaal Krantz, pivot to the left on it, and attack the Brakfontein position from its left flank. The 1st Cavalry Brigade under Burn-Murdoch (Royals, 13th and 14th Hussars, and A Battery R.H.A.) would also cross and run the gauntlet of Doornkloof and break out on to the plateau beyond Clery’s Division. The 2nd Cavalry Brigade (South African Light Horse, Composite Regiment, Thorneycroft’s, and Bethune’s Mounted Infantry, and the Colt Battery) were to guard the right and rear of the attacking troops from any attack coming from Doornkloof. Wynne was to co-operate as opportunity offered. Talbot Coke was to remain in reserve. Such was the plan, and it seemed to all who heard it good and clear. It gave scope to the whole force, and seemed to offer all the conditions for a decisive trial of strength between the two armies.
On Sunday afternoon the Infantry Brigades began to move to their respective positions, and at daylight on the 5th the Cavalry Division broke its camp behind spearman’s. At nine minutes past seven he bombardment of the Brakfontein position began, and by half-past seven all the Artillery except the Swartkop guns were firing in a leisurely fashion at the Boer redoubts and entrenchments. At the same time Wynne’s Brigade moved forward in dispersed formation towards the enemy, and the Cavalry began to defile across the front and to mass near the three Infantry Brigades collected near No. 2 pontoon bridge. For some time the Boers made no reply, but at about ten o’clock their Vickers-Maxim opened on the batteries firing from the Potgieter’s plain, and the fire gradually increased as other guns, some of great range, joined in, until the Artillery was sharply engaged in an unsatisfactory duel—fifty guns exposed in the open against six or seven guns concealed and impossible to find. The Boer shells struck all along the advanced batteries, bursting between the guns, throwing up huge fountains of dust and smoke, and covering the gunners at times completely from view.