amphibious ready group

amphibious ready group. An amphibious ready group (ARG) is a key naval expeditionary formation centered on delivering a United States Marine Corps Marine expeditionary unit (MEU) ashore. These groups provide the United States Navy and United States Department of Defense with a forward-deployed, rapid-response capability for a wide spectrum of operations. The concept evolved during the Cold War to ensure global reach and flexibility, integrating surface ships, aircraft, and landing craft into a single cohesive force.

Composition

A standard ARG is built around a core of three primary amphibious warfare ships. The centerpiece is often a Wasp-class amphibious assault ship or the newer America-class amphibious assault ship, which functions as a small aircraft carrier for helicopters and F-35 Lightning II aircraft. This is accompanied by a San Antonio-class amphibious transport dock, which provides docking space for Landing Craft Air Cushion (LCAC) hovercraft. The third major component is a Whidbey Island-class dock landing ship or Harpers Ferry-class dock landing ship, which carries additional landing craft and vehicles. This triad is frequently augmented by escort vessels such as Arleigh Burke-class destroyer warships, Ticonderoga-class cruiser platforms, and occasionally a submarine or Military Sealift Command support ship. The embarked 15th Marine Expeditionary Unit or similar MEU comprises the ground combat element, aviation combat element, and logistics combat element, totaling over 2,200 personnel.

Command and control

Command relationships within an ARG are delineated under the Composite Warfare Commander doctrine. The overall commander is the ARG commander, typically a Navy captain who also commands the amphibious squadron (PHIBRON). The embarked MEU is commanded by a Marine colonel, and together they form the Commander, Amphibious Task Force (CATF) and Commander, Landing Force (CLF) team, a partnership formalized in Naval doctrine. Operational control of the ARG while deployed falls under the relevant Numbered fleet, such as the Sixth Fleet in the Mediterranean Sea or the Seventh Fleet in the Pacific Ocean. Tactical control is exercised through the Marine Air-Ground Task Force command structure, with close coordination between the USS Boxer (LHD-4) command staff and the III Marine Expeditionary Force headquarters.

Operational capabilities

The primary mission is amphibious assault, projecting power ashore via surface connectors like Landing Craft, Utility and LCACs, and vertical assault using MV-22 Osprey tiltrotor aircraft and CH-53E Super Stallion helicopters. ARGs maintain a constant Sea state of readiness for other missions, including non-combatant evacuation operations, such as those conducted off Liberia or Lebanon, and humanitarian assistance and disaster relief following events like the 2004 Indian Ocean earthquake and tsunami. They also conduct maritime interdiction operations, support Special Operations Forces, and provide a stabilizing presence during crises like the 2011 military intervention in Libya. The integration of the F-35B provides a significant organic Close air support and air defense capability.

Historical deployments

The ARG concept was tested extensively during the Vietnam War, with units like the Special Landing Force conducting operations along the South China Sea coast. During the Gulf War, ARGs launched feints and assaults during Operation Desert Storm. In the post-September 11 attacks era, the USS Bataan (LHD-5) ARG supported ground operations in Afghanistan for Operation Enduring Freedom. The Iwo Jima Amphibious Ready Group played a pivotal role in the initial stages of Operation Iraqi Freedom, securing the Al Faw Peninsula. More recent deployments have focused on the Indo-Pacific Command area of responsibility, countering influence from the People's Liberation Army Navy and conducting exercises like Cobra Gold with allies such as the Royal Thai Navy.

Role in naval strategy

Within United States grand strategy, the ARG is a fundamental tool for Power projection and Forward presence, assuring allies and deterring adversaries without requiring Basing rights in foreign territories. They are a cornerstone of the National Defense Strategy emphasis on strategic flexibility. ARGs operate in contested environments, contributing to Sea control and enabling Littoral zone access, a concept central to the Naval Operations Concept. Their ability to operate from international waters makes them pivotal in responding to crises in regions like the South China Sea, the Strait of Hormuz, and the Mediterranean Sea, complementing the larger Carrier strike group while providing unique, ground-oriented capabilities to United States Central Command and United States European Command.