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In page Koos de la Rey:

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De la Rey fought in the Basotho War of 1865 and Sekhukhune's War of 1876. He did not take a very active part in the First Boer War, but as field cornet in the western Transvaal, he took over Piet Cronjé's Potchefstroom siege (1880 – 1881) when Cronjé fell ill. He was elected commandant of the Lichtenburg district, and became a member of the Transvaal Volksraad in 1883. A supporter of the progressive faction under General Piet Joubert, he opposed Paul Kruger's policies against the uitlanders, the foreigners who flocked to the Transvaal gold-rush, and warned it would lead to war with Britain.