In March 1942, the troop participated with 2 Commando in the raid on St Nazaire, codenamed Operation Chariot. Conceived to neutralise the western French port as an Atlantic sanctuary for the battleship "Tirpitz", Operation Chariot involved 611 men, the antiquated lend-lease destroyer "Campbeltown", and numerous small craft. The "Campbeltown" was reconfigured to resemble a German destroyer but converted into a platform designed to deliver of explosives.