The SBS model used a small team to place a charge and return to its folding boat, while the SAS operated in mobile desert columns. Vehicles let the SAS bring more men and enough explosives or firepower to attack an airfield, then escape by several possible routes. A foot party landed from a submarine had little support and had to return to one vulnerable beach and the same folding boats. Airfield attacks became more practical when 62 Commando and the Small Scale Raiding Force supplied larger boats that could deliver sufficient mass and extract it quickly.
Chapter · 45:09-47:19
Why reconnaissance raiders and airfield attackers needed different methods
Two men landing from a submarine could scout or sabotage discreetly, but airfield attacks demanded more people, more firepower, and a different extraction plan.