Я неверно выразился.Неправ,согласен.
То,что СБС не состоят,в 3 Бригаде,всегда было всем известно,но в системе подчинения Верховному Командованию,они стоят вместе с Морпехами Третьей Бригады,а следовательно могут пересекаться

"Command of the Royal Marines is vested in Commander in Chief Fleet with Commandant General Royal Marines, a Major General, embedded within the CINCFLEET staff as Commander UK Amphibious Force (COMUKAMPHIBFOR).
The operational capability of the Corps comprises a number of Battalion-sized units, three of these are designated as "Commandos":
40 Commando (known as Forty Commando) based at Norton Manor Barracks, Taunton, Somerset
42 Commando (known as Four Two Commando) based at Bickleigh Barracks, Plymouth, Devon
45 Commando (known as Four Five Commando) based at Condor Barracks, Arbroath, Angus, Scotland
Commando Logistic Regiment based at Chivenor, Devon
UK Landing Force Command Support Group based at Stonehouse Barracks, Plymouth
Fleet Protection Group Royal Marines based at HM Naval Base Clyde, Helensburgh, Argyll and Bute
Special Boat Service based at Royal Marines Barracks Poole, Dorset