Memorial event remembering D-Day rehearsal dead taking place in Devon
639 US soldiers were killed by 'friendly fire' during Exercise Tiger
A memorial event's taking place in the South Hams to remember those who died during rehearsals for D-Day.
639 American soldiers and sailors were killed during 'friendly-fire' incidents ahead of the landings on Utah Beach in 1944.
The incident was kept quiet for security reasons, with details only emerging 40 years later.
An 80th anniversary memorial is being held at the Sherman Tank Memorial, Slapton Sands, on Sunday.
Families of the servicemen killed during Exercise Tiger are expected to attend.