From: Vleiplaats
This Prisoner of War record for Charles William Henry Van Aardt 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=9212&r=Charles William Henry&s=Van Aardt&ref=
This set of Prisoner of War documents can be accessed online via the FamilySearch.org project by Clicking Here.