The reason that the Marines are considered to have developed a spec ops teams last is largely due to the military having a different definition of special opera

The reason that the Marines are considered to have developed a spec ops teams last is largely due to the military having a different definition of special operations than the average person. To an average person like me (and I was a Soldier) when I think of special forces, I consider pretty much anyone who went to one of the military's most elite schools. The SEALS, Force Recon, and the actual U.S. Army Special Forces all seem to have a similar level of ability. Each of these groups has taken the absolute best soldiers that could be found and trained them to an extreme degree. When the government thinks of special forces, they think of organizations that fall under the Special Operations Command. When the U.S. wanted Force Recon to fall under SOCOM, the commandant said "no." This is part of the reason that the Marine Corps didn't officially have special forces until recently.