Koos_de_la_Rey Jacobus Herculaas de la Rey (22 October 1847 - 15 September 1914), known as Koos de la Rey was a Boer general during the Second Boer War and is widely regarded as being one of the strongest military leaders during that conflict.He is generally regarded as the bravest of the Boer generals during the Second Boer War and as one of the leading figures of Boer independence.