A crack team of ten commandos who lead a secret underwater mission ahead of the D-Day invasions are to be honoured for the first time.

The ten elite troops spent five days underwater in tiny crafts as they lay in wait on the seabed ahead before the invasion of Normandy in 1944.

Their task was to spy from their 'X-crafts' on Nazi troops before guiding Allied forces across the treacherous rocky shoreline....