This is audio taken from video footage inadvertently shot by a British Royal marine.
He was on patrol with other marines in Afghanistan's Helmand Province in 2011.
It captures the moment the marines shot dead a severely injured and captured an insurgent at close range.
AUDIO RECORDING PLAYED IN MILITARY COURT (English): (OVERLAID WITH SLATE)
"Obviously, this doesn't go anywhere, fellas."
"Yeah, roger, mate."
"I've just broke the Geneva Convention."
Now the Royal marine who pulled the trigger's been found guilty by a military court of murder.
It's the first time a British soldier's been convicted of such a crime in the Afghan war.
Two other marines were acquitted of killing the unknown man.
After the verdict, Brigadier Bill Dunham, the Deputy Commandant General of the Royal Marines read a statement from the Ministry of Defense.
(SOUNDBITE) (English) BRIGADIER BILL DUNHAM, DEPUTY COMMANDANT GENERAL ROYAL MARINES, SAYING:
