Much of Sgt Danny Nightingale's court martial rested on conflicting accounts of how the gun and ammunition came to be in a home he was staying in.
- The prosecution accuse him of changing his story. He allegedly told police that the gun had been a "trophy" given to him in Iraq and that he had accumulated the ammunition from training sessions in the UK. Nightingale later told the court martial that someone else had put them there.
- The defence allege that Sgt Nightingale's memory was affected by a brain injury and that his confession to police was false because he was "confabulating" (filling in gaps in his memory based on what other people had told him). He said he had "no recollection of receiving the gun".
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