Let me state that I hugely respect the fighting forces of the US of A. Because of my interest in all regarding (historical) warfare I couldn't wait to see a documentary in Ultra HD 4K..although it is impressive to see I never felt I was getting more knowledge about the semper fi department. A nicely shot promotional video of the US Marines but nothing more. A disappointment if you are looking for inside information or a broader perspective of the history and current tasks of this versatile fighting force.