From: Carolina
This Prisoner of War record for Gabriel Johannes Van Loggenberg 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=12383&r=Gabriel Johannes&s=Van Loggenberg&ref=
This set of Prisoner of War documents can be accessed online via the FamilySearch.org project by Clicking Here.