The Office of Strategic Services (OSS) was an intelligence agency of the United States during World War II. The OSS was formed as an agency of the Joint Chiefs of Staff (JCS) to coordinate espionage activities behind enemy lines for all branches of the United States Armed Forces. Other OSS functions included the use of propaganda, subversion, and post-war planning.
The United States Navy Sea, Air, and Land (SEAL) Teams, commonly known as Navy SEALs, are the U.S. Navy's primary special operations force and a component of the Naval Special Warfare Command. Among the SEALs' main functions are conducting small-unit special operation missions in maritime, jungle, urban, arctic, mountainous, and desert environments. SEALs are typically ordered to capture or kill high-level targets, or to gather intelligence behind enemy lines. SEAL team personnel are hand-selected, highly trained, and possess a high degree of proficiency in unconventional warfare (UW), direct action (DA), and special reconnaissance (SR), among other tasks like sabotage, demolition, intelligence gathering, and hydro-graphic reconnaissance, training, and advising friendly militaries or other forces. All active SEALs are members of the U.S. Navy.
A frogman is someone who is trained in scuba diving or swimming underwater in a tactical capacity that includes military, and in some European countries, police work. Such personnel are also known by the more formal names of combat diver, combatant diver, or combat swimmer. The word frogman first arose in the stage name the "Fearless Frogman" of Paul Boyton in the 1870s and later was claimed by John Spence, an enlisted member of the U.S. Navy and member of the OSS Maritime Unit, to have been applied to him while he was training in a green waterproof suit.
Underwater warfare, also known as undersea warfare or subsurface warfare, is naval warfare involving underwater vehicle or combat operations conducted underwater. It is one of the four operational areas of naval warfare, the others being surface warfare, aerial warfare, and information warfare. Underwater warfare includes:
Underwater divers may be employed in any branch of an armed force, including the navy, army, marines, air force and coast guard. Scope of operations includes: search and recovery, search and rescue, hydrographic survey, explosive ordnance disposal, demolition, underwater engineering, salvage, ships husbandry, reconnaissance, infiltration, sabotage, counterifiltration, underwater combat and security.
The Underwater Demolition Team (UDT), or frogmen, were amphibious units created by the United States Navy during World War II with specialized missions. They were predecessors of the navy's current SEAL teams.
The United States Naval Special Warfare Command (USNSWC), also known as NAVSPECWARCOM and WARCOM, is the naval component of United States Special Operations Command, the unified command that oversees and conducts the nation's special operations and missions.
The Naval Diving Unit (NDU), also referred to as the Naval Divers, is the special forces formation of the Republic of Singapore Navy (RSN) responsible for conducting special operations from sea, air, and land. The formation is made up of six squadrons, specialising in explosive ordnance disposal, underwater demolition, maritime security operations, and combatant craft operations.
Underwater demolition is the deliberate destruction or neutralization of man-made or natural underwater obstacles, both for military and civilian purposes.
The Kopaska is the premier frogman and underwater demolition unit of the Indonesian Navy. The unit's motto is Tan Hana Wighna Tan Sirna. The unit's main duties are underwater demolition, destroying main underwater installations, reconnaissance, prisoner snatches, preparing beaches for larger naval amphibious operations, and counter-terrorism. During peacetime, the unit also deploys a team to serve as security personnel for VIPs and VVIPs. The personnel of Kopaska are recruited from Indonesian Navy seamen. Like other Indonesian special forces, Kopaska is trained to be able to conduct operations in the sea, including underwater, on land and airborne.
The Special Actions Detachment or DAE is the tier one special force maritime unit of the Portuguese Navy. It is part of the Portuguese Marine Corps. Raised in 1985, the DAE is one of the smallest special forces units within the Portuguese Armed Forces. It is responsible for conducting air-sea rescue, amphibious reconnaissance, amphibious warfare, black operation, bomb disposal, CBRN defense, coastal raiding, counterterrorism, direct action, executive protection, hostage rescue, irregular warfare, ISTAR, long-range penetration, JTAC, manhunt high-value target, maritime sabotage, mountain rescue, naval boarding, operation behind high risk enemy lines, special operations, special reconnaissance, tracking targets, underwater demolition, unconventional warfare, other missions in support of Portuguese and NATO armed forces. DAE's mission and training are similar to American special forces and it often trains with them.
The US employs divers in several branches of the armed forces, including the navy, army, marines, air force and coast guard.
The Special Warfare Combat Crewmen (SWCC ) are United States Naval Special Warfare Command personnel who operate and maintain small craft for special operations missions, particularly those of U.S. Navy SEALs. Their rating is Special Warfare Boat Operator (SB).
The Lambertsen Amphibious Respiratory Unit (LARU) is an early model of closed circuit oxygen rebreather used by military frogmen. Christian J. Lambertsen designed a series of them in the US in 1940 and in 1944.
John Pitts Spence was an American diver for the United States Navy and World War II veteran who is widely credited as the country's first combat frogman. Spence was the first enlisted man to be recruited into a clandestine group, operated by General William "Wild Bill" Donovan of the Office of Strategic Services (OSS), which would become known as the frogmen. The group was a predecessor of the present-day United States Navy SEALs.
The Special Unit of NEDSA, also known as Sepah Navy Special Force(S.N.S.F.), is a Takavar unit in the Islamic Revolutionary Guard Corps (IRGC) Navy stationed in the Greater Farur Island of the Persian Gulf.
Special Forces Underwater Operations (SFUWO) is the term for United States Army Special Forces combat operations involving the use of underwater infiltration methods. These typically involve the use of closed circuit dive equipment to infiltrate a beach landing site (BLS) undetected. The US Army Special Forces, also known as Green Berets have been conducting maritime operations and underwater operations since their founding in 1952. Currently, each company within a Special Forces Group mans, trains, equips, and deploys a SFUWO Operation Detachment Alpha (SFOD-A). These twelve-man teams train for SFUWO as their primary infiltration method when conducting one of their missions of unconventional warfare, direct action, counter-terrorism, foreign internal defense, among others.
The Special Operations Branch (SO) was a branch of the Office of Strategic Services during World War II that "pioneered" many of the unconventional warfare, counter-insurgency (COIN), and foreign internal defense tactics and techniques used by today's US Military Special Operations Forces (SOF). Special Operations was the American equivalent of the Special Operations Executive (SOE) of the United Kingdom.
Garland H. Williams (1903–1993) was an American pioneer of covert investigations, military counterintelligence, white collar investigations, espionage, training and planning, and a lifelong law enforcement officer. He is a veteran of World War II and the Korean War. During World War II, Williams was integral in the training of thousands of American hopeful would-be undercover operatives and guerrilla fighters in both the Military Intelligence Division and the Office of Strategic Services.
