The United Kingdom's Royal Marines are heirs to a warfighting legacy older than the entire U.S. military.
They fought in both Gulf Wars, both World Wars, and literally dozens of other conflicts around the world since the Royal Marines were established in 1664.
The Royal Marines were first organized as a group of 1,200 land soldiers assigned to sea service in the Royal Navy. They made a name for themselves 40 years later when they seized the Gibraltar fortress alongside Dutch allies and then held that fortress against sieges for nine months.
(Photo: YouTube/Royal Navy)
They were instrumental in the defeat of Napoleon at the Battle of Trafalgar in 1805 and conducted numerous amphibious assaults throughout World War I and World War II.
It was during World War II that the Royal Marines began organizing as commandos and adopted their distinct dark green berets. Since the end of World War II, these troops have been deployed to combat every year except 1968.
To learn even more about the Royal Marines and to see footage from their exploits since 1664, watch this video from the British Royal Navy: