Senior defence chiefs are joining an elite band of Second World War commandos this lunchtime for the first war memorial to 200 men who earned 90 gallantry awards and commendations in just three years.
The group undertook their top secret training on Hayling Island, Hampshire, and the are returning today for the official dedication of the memorial.
Countess Mountbatten, whose late father Lord Louis Mountbatten ordered the foundation of the Combined Operations Pilotage Parties (COPP) Unit 70 years ago, is among those present.
Among the other 150 guests are members of the Special Boat Squadron Association.
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Any lingering showers clearing into tonight with a mostly dry but chilly night ahead. A cool but sunny start to Sunday.
Further heavy showers gradually clearing away this evening. Dry but chilly tonight, then dry with plenty of sunshine tomorrow.
Heavy showers turning potentially thundery this afternoon. Becoming dry but chilly tonight, then dry and sunny tomorrow.