Warren's force numbered 11,000 infantry, 2,200 cavalry, and 36 field guns. (2nd and 5th Divisions) On the 11th they marched westward to cross the Little Tugela and take up position in front of Potgieter's Ferry. However their march was easily visible to the Boers, and so slow (due in part to the massive baggage trains necessary to British officers at the time – Warren's included a cast iron bathroom and well-equipped kitchen) that by the time they arrived at the Tugela, the Boers had entrenched a new position covering it. On the 18th British mounted troops under the Earl of Dundonald enterprisingly reached the extreme Boer right flank, from where there was little to stop them riding to Ladysmith, but Warren recalled them to guard the force's baggage. Once all his force had crossed the river, Warren sent part of the 2nd Division under Lieutenant-General Francis Clery against the Boer right flank positions on a plateau named Tabanyama. The Boers had once again entrenched a new position on the reverse slopes of the plateau, and Clery's attack made no progress. Meanwhile, the secondary British attack by Lyttelton at Potgieter's Drift had yet to commence in full.