"We were supposed to imagine we were travelling in armoured vehicles through a really hostile built-up area. One of the lads just lost his rag and 'opened fire' as it were, killing the soldier next to him.
"He then drove down the street deliberately smashing into cars. It's safe to say the officers in our battalion did not find it as funny as we did."
The unidentified Rifleman was reprimanded after the exercise and later formally charged with disobeying orders.
His reputed punishment was to spend a weekend carrying out guard duties at the 3 Rifles base at Redford Barracks in the Scottish capital.
A Ministry of Defence spokesperson said: "We take the training of our service personnel very seriously and anyone who is disruptive to this training will receive disciplinary action.
"Virtual reality training programmes are able to deliver greater flexible training and replicate complex scenarios allowing for rapid experimentation, development of tactics and ability to test new vehicles in multiple environments."
This article originally appeared on the Daily Telegraph.