Navy Expeditionary Combat Command (NECC), established in January 2006, serves as the single functional command for the Navy's expeditionary forces and as central management for the readiness, resources, manning, training and equipping of those forces.

NECC consolidates, aligns and integrates diverse expeditionary capabilities and combat support elements to create consistent expeditionary practices, procedures, requirements and logistics in the battle space. NECC’s enterprise approach will yield improved efficiencies and effectiveness through economies of scale and common processes.

NECC is a command element and force provider for integrated maritime expeditionary missions. NECC is a core expeditionary force providing effective waterborne and ashore anti-terrorism, force protection, theater security cooperation and engagement, and humanitarian assistance/disaster relief contingencies. Upon request, NECC supplements Coast Guard homeland security requirements while training and equipping forces to support mission requirements.

NECC capabilities include; Explosive Ordnance Disposal, Maritime Expeditionary Security, Riverine, Diving Operations, Naval Construction, Maritime Civil Affairs, Expeditionary Training, Expeditionary Logistics, Expeditionary Intelligence, Combat Camera, Expeditionary Combat Readiness, and Maritime Expeditionary Security.

The Maritime Expeditionary Security Force’s (MESF) (formerly known as Naval Coastal Warfare) primary mission is force protection conducted through fleet support with operations around the world. Anti-Terrorism and Force Protection missions include harbor and homeland defense, coastal surveillance, and special missions. Specialized units work together with MESF squadron staffs providing intelligence and communications. MESF units deploy worldwide to detect, deter, and defend an area, unit, or High Value Asset. Recent locations include the United States, Korea, Saudi Arabia, Kuwait, Bahrain, United Arab Emirates, and Egypt.

Two Maritime Expeditionary Security Groups in San Diego and Portsmouth, Va. provide centralized planning, control, training, coordination, equipping, and integration of coastal warfare assets trained to operate in high density, multi-threat environments. Units conduct force protection of strategic shipping and naval vessels operating in the inshore and coastal assets, anchorages and harbors, from bare beach to sophisticated port facilities.

Coastal and harbor defense and protection of naval assets are placed under the jurisdiction of two Naval Coastal Warfare Groups: one for the Pacific Fleet and one for the Atlantic Fleet. Within these groups are Mobile Security Squadrons and Naval Coastal Warfare Squadrons. MSSs deploy Mobile Security Detachments that provide force protection for high value naval targets in ports and harbors where U.S. shore infrastructure is limited or does not exist. Naval Coastal Warfare Squadrons provide surveillance and security in harbors, coasts, and inshore areas. They comprise Mobile Inshore Undersea Warfare Units (MIUWUs) and Inshore Boat Units (IBUs). MIUWUs are charged with security, observation, and communications support for commanders operating in an inshore/coast environment, including anchorages and harbors. In the same operating environment, IBUs manage water craft for security, interdiction and surveillance.

Navy Expeditionary Combat Command
Active 2006 - present
Country United States of America
Branch United States Navy Seal United States Navy
Size 40,000
Garrison/HQ NAB Little Creek
Engagements Operation Enduring Freedom
Operation Iraqi Freedom
Rear Admiral Michael P. Tillotson


NECC aligns disparate expeditionary capabilities to clearly articulate consistent and coordinated expeditionary practices, procedures and requirements in the joint battlespace. NECC integrates all warfighting requirements for expeditionary combat and combat support elements, consolidating and realigning the Navy’s expeditionary forces under a single command to improve fleet readiness. NECC’s enterprise approach intends to improve efficiencies and effectiveness through economies of scale.

NECC changed how the U.S. Navy organizes, trains and equips its forces to meet the Maritime Security Operations and Joint contingency operations requirements. NECC is not a standalone or combat force, but rather a protection force that fills the gaps in the joint warfare arena and complements capabilities of foreign military partners. As an asset to operational commanders, NECC is designed to provide an array of capabilities that are unique to the expeditionary maritime environment as opposed to the blue water and land warfare environments.

NECC seamlessly operates with the other services and coalition partners to provide cooperative assistance as requested. This redistribution of support places naval forces where they are needed the most and establishes new capabilities in support of Maritime Security Operations.


NECC components offer functions such as command and control of expeditionary warfare operations, training, maritime civil affairs, maritime and port security, logistics support, construction, littoral and coastal warfare and patrol, riverine warfare, explosive ordnance disposal (EOD), expeditionary diving and combat salvage, and combat photography.

Individual training and qualifications

Members of most NECC Commands are generally expected to seek qualification for the Enlisted Expeditionary Warfare Specialist Insignia unless they belong to specialized communities which require them to qualify for the Seabee Combat Warfare Badge, Navy Diving Badge or Navy Explosive Ordnance Disposal Badge.

Component commands of the NECC

NECC component commands include:

  • 1st Naval Construction Division or "Seabees"
  • Expeditionary Combat Readiness Center
  • Explosive Ordnance Disposal Group 1 & 2
  • Maritime Civil Affairs and Security Training Command
  • Maritime Expeditionary Security Group 1 & 2
  • Commander Task Force 56, United States Fifth Fleet
  • NECC Detachment Combat Camera, Norfolk
  • Navy Expeditionary Intelligence Command (NEIC)
  • Navy Expeditionary Logistics Support Group (United States)
  • Maritime Expeditionary Security Force
  • Expeditionary Logistics Support Group
  • Riverine Squadron Group One
  • Mobile Diving and Salvage Units

Other entities sharing allied functions or similarities independent from NECC

Conventional United States Marine Corps and US Navy entities:

  • Fleet Marine Force (FMF), a component maritime military force that provides expeditionary and amphibious warfare (ship-to-shore beach landings), supported by appropriate U.S. Navy operational forces. Subordinate commands of the FMF, comprising the Marine Expeditionary Forces (MEF)—and its subordinate Marine Expeditionary Units (MEU)—are responsible in conflicts pertaining to littoral, and its adjacent areas (green-water naval support); the MEFs no longer provides conventional riverine missions (brown-water naval support), as it handed this function on to NECC.

Unconventional Naval Special Warfare entities:

  • Special Boat Squadron (USN), who share the Navy's Coastal Warfare heritage
  • Special Boat Teams, who share the Navy's coastal, littoral, and riverine warfare heritage
    • Special Boat Team 12 and SBT-20, who share the Navy's Coastal and littoral warfare heritage
    • Special Boat Team 22, who share the Navy's riverine warfare heritage

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