From Longman Dictionary of Contemporary Englishspecial forcesˌspecial ˈforces noun [plural] PMAsoldiers who have been specially trained to fight against guerrilla or terrorist groups
Examples from the Corpus
special forces• Before this force of 5,000 commandos could be raised, however, Churchill's enthusiasm for special forces was tempered by reality.• He refused to comment on how many other special forces soldiers were involved.• Male speaker Yes we do teach elements of the special forces. 