Roberts launched his main attack on 10 February 1900 and although hampered by a long supply route, managed to outflank the Boers defending Magersfontein. Field Marshal Frederick Sleigh Roberts, 1st Earl Roberts was a British Victorian era general who became one of the most successful British military commanders of his time. Born in India to an Anglo-Irish family, Roberts joined the East India Company Army and served as a young officer in the Indian Rebellion during which he won a Victoria Cross for gallantry. He was then transferred to the British Army and fought in the Expedition to Abyssinia and the Second Anglo-Afghan War, in which his exploits earned him widespread fame. Roberts would go on to serve as the Commander-in-Chief, India before leading British Forces to success in the Second Boer War. He also became the last Commander-in-Chief of the Forces before the post was abolished in 1904.
On 14 February, a cavalry division under Major General John French launched a major attack to relieve Kimberley. Although encountering severe fire, a massed cavalry charge split the Boer defenses on 15 February, opening the way for French to enter Kimberley that evening, ending its 124 days' siege.
In Natal, the Battle of the Tugela Heights, which started on 14 February was Buller's fourth attempt to relieve Ladysmith. The losses Buller's troops had sustained convinced Buller to adopt Boer tactics "in the firing line—to advance in small rushes, covered by rifle fire from behind; to use the tactical support of artillery; and above all, to use the ground, making rock and earth work for them as it did for the enemy." Despite reinforcements his progress was painfully slow against stiff opposition.
On 17 February, a pincer movement involving both French's cavalry and the main British force attempted to take the entrenched position, but the frontal attacks were uncoordinated and so were easily repulsed by the Boers. Finally, Roberts resorted to bombarding Cronjé into submission, but it took a further ten precious days, and with the British troops using the polluted Modder River as water supply, there was a typhoid epidemic killing many troops. General Cronjé was forced to surrender at Surrender Hill with 4,000 men.
The Battle of Paardeberg or Perdeberg ("Horse Mountain") was a major battle during the Second Anglo-Boer War. It was fought near Paardeberg Drift on the banks of the Modder River in the Orange Free State near Kimberley. Lord Methuen advanced up the railway line in November 1899 with the objective of relieving the besieged city of Kimberley (and the town of Mafeking, also under siege). Battles were fought on this front at Graspan, Belmont, Modder River before the advance was halted for two months after the British defeat at the Battle of Magersfontein. In February 1900, Field Marshal Lord Roberts assumed personal command of a significantly reinforced British offensive.
On 26 February, after much deliberation, Buller used all his forces in one all-out attack for the first time and at last succeeded in forcing a crossing of the Tugela to defeat Botha's outnumbered forces north of Colenso.