Conversation so far:
what is the name of the special forces in the marines
Marine Corps and Navy special forces are named: the marine Raiders, Force RECON units, and SEAL teams.
What is the function of the Marine Raiders
Marine Raiders are elite units established by the United States Marine Corps to conduct special amphibious light infantry warfare, particularly in landing in rubber boats and operating behind the lines.

Question: What is the function of the second one
Self-contained rewrite: What is the function of the Force Recon Units