Until recently, the SBS recruited exclusively from the Royal Marines, while the SAS was almost entirely composed of soldiers, approximately 50 percent of whom were from the Parachute Regiment.

which allows Special Forces – such as the Royal Marine Commandos or Royal Navy Special Boat Service (SBS) operators – to deploy whilst the submarine is submerged.

The untold story of the members of the Women's Royal Naval Service, whose brilliant tactics defeat a massive convoy of German U-boats in WWII. When WWII breaks out between Britain and Germany, the ...