"Some people believe that the strong should dominate and suppress the weak. I do not share this belief. I believe that the strong should uplift the weak, so that the weak might transcend their weakness, and become strong."
I have created a quick fix for the PsiCorps Trooper bug in DoctorDestiny's Beowulf's Rules mod for Yuri's Revenge, version 1.1.2.
Here's the download link: PsiCorps Trooper Fix 112
To apply the fix, just extract the Rules.ini file, then place it in your RA2/Yuri's revenge installation folder.