* [[Wolf Skevos-Jones|WSJ]] contributed to the coding and a weapon sound.
Mr. Wolf]] contributed the South American enemy voices and the new set of enemies and weapons. This set of enemies would prove influential in years to come, and would be used in countless mods.
An SDL port was released on October 1, 2011 making it one of the first ''old'' mods to be converted. This was done by [[Andy Nonymous]].
== External links ==
[http://www.wolfenvault.com/files/mods/mno/OLSDL.zip Download Operation: Letzterschutz (SDL)] at [http://www.wolfenvault.com The Wolfenstein 3D Vault]