What did the dutch fight between 1899-1902?

The Dutch did not fight in the war between 1899-1902. This war is known as the Second Boer War, and it was fought between Great Britain and the Boer Republics (the Transvaal and the Orange Free State).

The Dutch, while having a historical connection to the Boers (who were descendants of Dutch settlers in South Africa), were not involved in the war. The Netherlands was a neutral country during the conflict.