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.