Some of the words sound similar to Dutch. Verby means "over" or "finished." The word "General" is pretty clear. I am going to search for the original with translation.
De La Rey was a famous Boer General who fought against the British during the “Boer Wars” he was known as the Lion of the Transvaal the song commemorates his defence and stand against the perfidious grab of the Boer Republics territory!