Nigerian Solders and their wierd punishment

This video trending online shows how a man was being made to swim in very dirty mud water.

Reports say that the unidentified man was "punished by Nigerian Soldiers" for an unknown offence

 In the video, the alleged soldiers are heard saying "Oya put your head inside, enter well. If you no put your head, I go wipe you koboko''.

This is so horrible!!!

So, the solders derives pleasure in executing this horrible act?