Royal Marines
Overview
 
The Corps of Her Majesty's Royal Marines, commonly just referred to as the Royal Marines (RM), are the marine corps and amphibious
Amphibious warfare
Amphibious warfare is the use of naval firepower, logistics and strategy to project military power ashore. In previous eras it stood as the primary method of delivering troops to non-contiguous enemy-held terrain...

 infantry
Infantry
Infantrymen are soldiers who are specifically trained for the role of fighting on foot to engage the enemy face to face and have historically borne the brunt of the casualties of combat in wars. As the oldest branch of combat arms, they are the backbone of armies...

 of the United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 and, along with the Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 and Royal Fleet Auxiliary
Royal Fleet Auxiliary
The Royal Fleet Auxiliary is a civilian-manned fleet owned by the British Ministry of Defence. The RFA enables ships of the United Kingdom Royal Navy to maintain operations around the world. Its primary role is to supply the Royal Navy with fuel, ammunition and supplies, normally by replenishment...

, form the Naval Service. They are also the United Kingdom's specialists in amphibious warfare
Amphibious warfare
Amphibious warfare is the use of naval firepower, logistics and strategy to project military power ashore. In previous eras it stood as the primary method of delivering troops to non-contiguous enemy-held terrain...

, including the operation of landing craft
Landing craft of the Royal Marines
The landing craft of the Royal Marines consist of a varied fleet of transport craft maintained by the Royal Navy and designed to transport the Royal Marines from ship to shore as well as conduct river or estuary patrols. The craft are generally classified according to their role...

; mountain warfare
Mountain warfare
Mountain warfare refers to warfare in the mountains or similarly rough terrain. This type of warfare is also called Alpine warfare, named after the Alps mountains...

; and Arctic warfare
Arctic warfare
Arctic warfare or winter warfare is a term used to describe armed conflict that takes place in an exceptionally cold weather, usually in snowy and icy terrain, sometimes on ice-covered bodies of water...

. A core component of the country's Rapid Deployment Force
Rapid Deployment Force
A rapid deployment force is a military formation capable of quick deployment of its forces. Such forces typically consist of elite military units and may receive priority in equipment and training to prepare them for their mission....

, the 3 Commando Brigade
3 Commando Brigade
3 Commando Brigade is a commando formation of the British Armed Forces and the main manoeuvre formation of the Royal Marines. Its personnel are predominantly Royal Marines, supported by units of Royal Engineers, Royal Artillery, The Rifles, and the Fleet Air Arm, together with other Commando...

 is capable of operating independently and is highly trained as a commando force.
 
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