Timothy Cray, prosecuting at the Danny Nightingale retrial, has said: "No soldier, no matter what his experience or the unit he is attached to is above the law."
The prosecution say the defence will claim that Sergeant Nightingale's earlier admissions to the offences are unreliable and that someone else could have put the gun in his wardrobe and ammunition under his bed.
Their claim of unreliability is put down to memory difficulties he says he suffered.
More top news
A nurse has told ITV News how the courage of the Manchester bombing victims gave her the strength to carry on.
A warm evening with late sunshine and feeling very summery
Donald Trump has threatened to "Send in the Feds" to deal with gun and gang problems but many say that deeper changes are needed.