The plaque has been installed at Worbarrow Bay, which is part of the Defence Infrastructure Organisation (DIO)-managed military training estate. The land provided a vital training area for the commando unit, which carried out the ?splinter? operation, known as Operation Cauldron, to immobilise German heavy artillery that posed a threat to the beach landing areas in France during WW2.

Following specialist training in Scotland, 4 Commando returned to Worbarrow to carry out crucial cliff scaling exercises in preparation for their task. On 19 August 1942, the commandos launched their raid alongside a Canadian unit, which came ashore under fire from mortars and machine guns. There were 5,000 casualties that day.

There is already a commemorative plaque at West Bay to remember the Canadian troops involved, but up until now, there has been no memorial to acknowledge the role of 4 Commando. Further to the memorial on the Defence Training Estate, a duplicate memorial, unveiled on the same day, will sit in the Weymouth memorial garden, which is used for local remembrance services.