Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.

The Second Boer War, also known as the Boer War, Transvaal War, Anglo–Boer War, or South African War, was a conflict fought between the British Empire and the two Boer republics over Britain's influence in Southern Africa.

The United Kingdom of Great Britain and Ireland was the union of the Kingdom of Great Britain and the Kingdom of Ireland into one sovereign state, established by the Acts of Union in 1801. It continued in this form until 1927, when it evolved into the United Kingdom of Great Britain and Northern Ireland, after the Irish Free State gained a degree of independence in 1922.

The Battle of Vaal Krantz was the third failed attempt by General Redvers Buller's British army to fight its way past Louis Botha's army of Boer irregulars and lift the Siege of Ladysmith. The battle occurred during the Second Boer War.

The siege of Ladysmith was a protracted engagement in the Second Boer War, taking place between 2 November 1899 and 28 February 1900 at Ladysmith, Natal.