I found an excellent piece that explains the relationship the USMC now has with US SOCOM.

Enjoy.

By: Eric O’Neil, USMC Officer

Force Recon should not be confused with the newly established (circa. 2007) Marine Special Operations Command (MARSOC). Whereas MARSOC is Special Operations Command’s (USSOCOM’s) newest unit, Force Recon is considered a “Special Operations Capable” unit that belongs exclusively to the Marine Corps.