Question: What was the original name of the special forces unit that was the main focus of the movie The Cockleshell Heroes?
Sentence (from "Special Boat Service"): After the Second World War, the Royal Marines formed special forces with several name changes with Special Boat Company adopted in 1951 which was re-designated as the Special Boat Squadron in 1974 and on 28 July 1987 to the Special Boat Service after assuming responsibility for maritime counter terrorism.
Relevant evidence: No