From: Dangerpoint
This Prisoner of War record for Casper Hendrik Jacobus Rautenbach was transcribed record from various documents held at the National Archives, South Africa, including arrest and shipping information from newspaper sources like De Zuid-Afrikaan.
https://www.gendatabase.com/boer-war-prisoner-record.php?q=21358&r=Casper Hendrik Jacobus&s=Rautenbach&ref=
This set of Prisoner of War documents can be accessed online via the FamilySearch.org project by Clicking Here.