The Natal Field Force (NFF) was a multi-battalion field force originally formed by Major-General Sir George Pomeroy Colley in Natal for the First Boer War. It was later re-established for the Second Boer War (1899–1902) and commanded by Major-General Sir Redvers Buller (although after the failed attack at Colenso he was replaced as overall commander in South Africa by Lord Roberts).