The High Court has ordered a fresh inquest into the death of soldier Private Cheryl James who died at Deepcut barracks after a challenge by her family.
Mr Justice Mitting and Judge Peter Thornton QC both agreed that there was "an insufficiency of inquiry" at the 1995 inquest and quashed its open verdict.
Pte James, 18, was found dead from a single gunshot wound in November 1995.
Judge Thornton said "the discovery of new facts or evidence" made "a fresh investigation including a fresh inquest necessary or desirable in the interests of justice".
Pte James was one of four soldiers who died at the Surrey barracks between 1995 and 2002 amid claims of bullying and abuse. Privates Sean Benton, James Collinson and Geoff Gray also died from gunshot wounds.