 The Marine Amphibious Commandos Special Operations Course is the toughest course in the corps and has a one-in-two failure rate; its courses last a year.During its infancy Navy Chief of Naval Support indicated that the short-term goal was to have a force consisting of Marine Corps Infantry Company, Service Support Company, Provost Company and Brass Band.However due operation requirements, a Marine Battalion with own organic rapid Reaction, Operational Boats Unit and Operational Diving teams is envisioned.