I had no idea who you were talking about so did a little research.
There is a lot more to say about him, but this is more on point.
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"In 2001, the acclaimed and award winning simulation game, IL2, was released by Madox Games from Russia. Later that decade, van Wyk de Vries conducted some research to help improve subsequent versions of this game. He did this by creating photographic records of the WW2 era planes currently in the inventory of the Johannesburg based South African Museum of Military History. This in turn led him to the expanded and detailed re-researching and recompiling of the restoration files for some of the German Planes in the collection. In 2008 he became involved in the unauthorized modification of the game along with several white hat hackers, 3D artists and military history enthusiasts. Later that year he started an online platform, sas1946.com, for use in collaboration and project management. This website subsequently became the most successful of its genre in history, and gave rise to the release of several packs of mods like "Dark Blue World" and "BAT". The former being mentioned by PC Gamer magazine as in their list of top ten battlefield simulation games of all time." Wiki