The Korean War began on 25 June 1950, when the North Korean army invaded South Korea. Beginning with a detachment of 11 personnel from UDT 3, UDT participation expanded to three teams with a combined strength of 300 men. As part of the Special Operations Group, or SOG, UDTs successfully conducted demolition raids on railroad tunnels and bridges along the Korean coast. On 15 September 1950, UDTs supported Operation Chromite, the amphibious landing at Incheon. UDT 1 and 3 provided personnel who went in ahead of the landing craft, scouting mud flats, marking low points in the channel, clearing fouled propellers, and searching for mines. Four UDT personnel acted as wave-guides for the Marine landing.
In October 1950, UDTs supported mine-clearing operations in Wonsan Harbor where frogmen would locate and mark mines for minesweepers. On 12 October 1950, two U.S. minesweepers hit mines and sank. UDTs rescued 25 sailors. The next day, William Giannotti conducted the first U.S. combat operation using an "aqualung" when he dove on the USS Pledge (AM-277). For the remainder of the war, UDTs conducted beach and river reconnaissance, infiltrated guerrillas behind the lines from sea, continued mine sweeping operations, and participated in Operation Fishnet, which severely damaged the North Korean's fishing capability.

Navy SEALs &SWCC
Naval Special Warfare personnel comprise less than one percent of U.S. Navy personnel. SEAL and SWCC units operate across the spectrum of conflict and in operations other than war in a controlled manner; their ability to provide real time intelligence and "eyes on target", offer decision makers immediate options in the face of rapidly changing world crises.^[15]

SEALs
Main article: United States Navy SEALs

SEALs are Special Operations Command’s force-of-choice to conduct small-unit maritime military operations which originate from, and return to a river, ocean, swamp, delta or coastline. This littoralcapability is considered more important now than ever, as half the world’s infrastructure and population is located within one mile (1.6 km) of an ocean or river. ^[16]
Responding to President John F. Kennedy's desire for the Services to develop an Unconventional Warfare (UW) capability, the US Navy established SEAL Team ONE and SEAL Team TWO in January 1962. Formed entirely with personnel from Underwater Demolition Teams, the SEALs mission was to conduct counter guerrilla warfare and clandestine operations in maritime and riverine environments. ^[17]
Navy SEALs have distinguished themselves as an individually reliable, collectively disciplined and highly skilled maritime force. Because of the dangers inherent in NSW, prospective SEALs go through what is considered by many military experts to be the toughest training in the world. The intense physical and mental conditioning it takes to become a SEAL begins at Basic Underwater Demolition/SEAL (BUD/S) training.
SEAL candidates begin BUD/S training at the Naval Special Warfare Center, NAB Coronado, California. This six-month course of instruction focuses on physical conditioning, small boat handling, diving physics, basic diving techniques, land warfare, weapons, demolitions, communications, and reconnaissance.
First Phase trains, develops, and assesses SEAL candidates in physical conditioning, water competency, teamwork, and mental tenacity. Second (Diving) Phase trains, develops, and qualifies SEAL candidates as competent basic combat swimmers. During this period, physical training continues and becomes even more intensive. Emphasis is placed on long distance underwater dives with the goal of training students to become basic combat divers, using swimming and diving techniques as a means of transportation from their launch point to their combat objective. This is a skill that separates SEALs from all other Special Operations forces. Third Phase trains, develops, and qualifies SEAL candidates in basic weapons, demolition, and small unit tactics. Third Phase concentrates on teaching land navigation, small-unit tactics, patrolling techniques, abseiling, marksmanship, and military explosives. The final three and a half weeks of Third Phase are spent at NALFSan Clemente Island,^[18] where students apply all the techniques they have acquired during training. ^[19]

SDVTs
SEAL Delivery Vehicle Teams' historical roots began during WWII with the earliest human torpedos to see use: Maiale, used by Italy'sDecimaFlottiglia MAS, and Chariots, used by British commando frogmen. Naval Special Warfare entered the wet submersible field in the 1960s when the Coastal Systems Center in Panama City, FL developed the Mark 7, a free-flooding SDV of the type used today, and the first SDV to be used in the fleet. The Mark 8 and 9 followed in the late 1970s.
Today's Mark 8 Mod 1 provides NSW with an unprecedented capability that combines the attributes of clandestine underwater mobility and the combat swimmer. The Advanced SEAL Delivery System (ASDS) program that would have provided NSW a new (dry) submersible for long range infiltration missions was abandoned in 2009.

SWCC
The exclusive mission of Special Warfare Combatant-craft Crewmen operators is to expertly drive and provide large-caliber gunfire support on specialized high-tech, high-speed, and low-profile Surface Combatant Craft to secretly infiltrate and exfiltrate Navy SEALs on Special Operations missions worldwide. These missions include direct action on land, sea, coastline or rivers (such as strikes, captures, and ship take downs by Visit, Board, Search, and Seizure), special reconnaissance, coastal patrol and interdiction of suspect ships and surface craft, counter-terrorism operations, riverine warfare, deception operations, search and rescue operations, and foreign internal defense missions. ^[20] Although SEALs and SWCC undergo different training programs, both are focused on special operations in maritime environments. The SWCC program includes extensive training on craft and weapons tactics, techniques, and procedures. Like SEALs, SWCC must show physical fitness, possess strong motivation, be combat focused, and maintain responsiveness in high stress situations. ^[21]
The SWCC designation is a relatively new Naval Special Warfare career path that is independent of the regular line Navy. Today’s Special Boat Teams have their origins in the PT boats of WWII and the “Brown Water” naval force that was created in 1965 at the onset of the Vietnam War. Patrol Coastal and Patrol Torpedo ships are the ancestors of today's Cyclone class patrol ships and Mark V Special Operations Craft.

Structure
Naval Special Warfare Group 10 was established at Virginia Beach, Va. on May 25, 2011.^[22]

Global War on Terror
NSW is committed to combating the global terrorist threats. In addition to being experts in special reconnaissance and direct action missions, the skill sets needed to combat terrorism; NSW is postured to fight a dispersed enemy on their territory. NSW forces can operate from forward-deployed Navy ships, submarines and aviation mobility platforms as well as overseas bases and its own overseas units.

War in Afghanistan
In response to the attacks on America 11 Sep 2001, Naval Special Warfare forces put operators on the ground in Afghanistan in October. The first military flag officer to set foot in Afghanistan was a Navy SEAL, Rear Admiral Albert Calland, in charge of Special Operations Command Central (SOCCENT), which was responsible for all special operations for Central Command.^[23] Additionally, a Navy SEAL captain commanded Combined Joint Special Operations Task Force (CJSOTF) South. Commonly referred to as Task Force K-Bar, the task force included Navy, Army, Air Force and Coalition Special Operations forces. During Operation Enduring Freedom, NSW forces carried out more than 75 special reconnaissance and direct action missions, destroying more than 500,000 pounds of explosives and weapons; positively identifying enemy personnel and conducting Leadership Interdiction Operations in the search for terrorists trying to escape by seagoing vessels.
Operation Red Wings, a counter insurgent mission in Kunar Province, Afghanistan, involved four Navy SEALs and took place on 28 June 2005. The SEALs were on a mission to try to find a key Taliban leader. However, goat herders stumbled upon their hiding place and alerted local Taliban fighters, and they were subsequently surrounded by Taliban forces. The four SEALs requested back up after the Taliban had surrounded them. In the attempt to rescue the four SEALs on the ground a Boeing CH-47 Chinook containing members of SEAL delivery team one and several Army “Nightstalker” pilots was shot down. This is the biggest single loss of life for Naval Special Warfare forces since World War II. A firefight ensued, killing three SEALs. The fourth, Marcus Luttrell, was protected by local villagers and later rescued by the US military. The team leader, SEAL Lieutenant Michael P. Murphy, was posthumously awarded the Medal of Honor.
SEAL Senior Chief Petty Officer Dan Healy was awarded the Bronze Star with Combat “V” for Valor, Purple Heart, and Afghanistan Campaign Medal, posthumously.

Iraq War
Naval Special Warfare has played a significant role in Operation Iraqi Freedom, employing the largest number of SEALs and SWCC in its history. NSW forces were instrumental in numerous special reconnaissance and direct action missions including the securing of the southern