Lord Roberts captured Pretoria on 5 June and the armies soon passed to the east. After the guerrilla war began, a force under Clements harried the Boers in the Moot, a valley in the Magaliesberg mountains. By the end of the year, the British grew careless. On 2 December, De la Rey's commando ambushed an ox-wagon convoy east of Rustenburg, killing and wounding 64 British soldiers and capturing 54 men and 118 wagons. De la Rey's deputy, Jan Smuts had a close call when a bullet intended for him killed another Boer. The raiders appropriated the boots and clothing and burned the rest of the supplies, while setting their prisoners free.
De la Rey scouted Clement's camp at Nooitgedacht for three days. The camp had good water supply and a nearby mountain allowed communication by heliograph with Major General Robert Broadwood at Rustenburg. However, the site was dominated on the north by a 300-metre (980 ft) mountain. A 1500-man commando led by General Beyers soon arrived, giving the Boers numerical superiority over their adversaries. Smuts later wrote, "I do not think it was possible to have selected a more fatal spot for a camp."
Battle
The Boer leaders soon agreed on a plan. Half of Beyers' men would stay behind to keep Broadwood from marching to the rescue. The remainder, about 1500 men, were split into three attacking groups. Beyers would lead his commando against 300 British pickets on the mountaintop. Beyers detached Commandant Badenhorst to attack the camp from the west. De la Rey would capture several kopjes in the Moot to the south. If all went well, Clements' brigade would be trapped and destroyed.
In the event, Badenhorst's column blundered into the British picket lines in the pre-dawn darkness. In a brief fusillade at close range, the Boers were driven back, with losses on both sides. The alerted British now manned their defensive positions. Beyers then launched his attack on the mountaintop, but his tired men were soon stopped by sturdy resistance from the Northumberland Fusiliers. After witnessing De la Rey's initial attack being repulsed in the valley below, Beyer's men became inspired and stormed the British positions on the mountaintop. After losing about 100 casualties, Captain Yatman surrendered at about 7:00 am. Reinforcements climbing the mountain lost heavily when Beyers' men suddenly poured fire into them.
That morning it was too hazy to flash a message to Broadwood, so Clements was entirely on his own. Meanwhile, De la Rey and Smuts had managed to capture all the kopjes in the Moot except one, Yeomanry Hill (Hartebeestfontein). Clements alertly and swiftly concentrated his survivors on this position. At 8:00 am, the British drove away a group of Boers who had gained a foothold on Yeomanry Hill. They then worked furiously to make the hill defensible. A 4.7-inch naval gun was even saved by rolling it downhill from its original perch and dragging it back to the main British position.
Meanwhile, the men under Beyers turned aside to loot the British camp and nothing the Boer general could do would get them back to the battle. One Boer remarked, "We were refitted from head to heel." At 4:00 pm, Clements and the remnant of his brigade rode off with his artillery toward Pretoria. Their retreat was virtually unopposed because the Boers were exhausted and by this time De la Rey's men had joined the other Boers in plundering the enemy camp.
Aftermath
Thanks to his quick response to the crisis, Clements saved his brigade from annihilation. However, the general lost half his brigade due to his poor choice for a camp. The Imperial forces suffered no consequences from their defeat aside from the casualties suffered and the supplies lost. Within a short time, a column under Clements was again harassing the Moot.