The Office of Strategic Services (OSS) was the 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.
A commando is a combatant, or operative of an elite light infantry or special operations force, specially trained for carrying out raids and operating in small teams behind enemy lines.
The Indian National Army was a collaborationist armed unit of Indian collaborators that fought under the command of the Japanese Empire. It was founded by Mohan Singh on 1 September 1942 in Southeast Asia during World War II.
Spetsnaz, are special forces in many post-Soviet states. Historically, this term referred to the Soviet Union's Spetsnaz GRU, special operations units of the GRU, the main military intelligence service. Today it refers to special forces branches and task forces subordinate to ministries including defence, internal affairs, or emergency situations in countries that have inherited their special purpose units from the now-defunct Soviet security agencies.
Operation Gladio was the codename for clandestine "stay-behind" operations of armed resistance that were organized by the Western Union (WU), and subsequently by NATO and by the CIA, in collaboration with several European intelligence agencies during the Cold War. Although Gladio specifically refers to the Italian branch of the NATO stay-behind organizations, Operation Gladio is used as an informal name for all of them. Stay-behind operations were prepared in many NATO member countries, and in some neutral countries.
Z Special Unit was a joint Allied special forces unit formed during the Second World War to operate behind Japanese lines in South East Asia. Predominantly Australian, Z Special Unit was a specialist reconnaissance and sabotage unit that included British, Dutch, New Zealand, Timorese and Indonesian members, predominantly operating on Borneo and the islands of the former Dutch East Indies.
Force 136 was a far eastern branch of the British World War II intelligence organisation, the Special Operations Executive (SOE). Originally set up in 1941 as the India Mission with the cover name of GSI(k), it absorbed what was left of SOE's Oriental Mission in April 1942. The man in overall charge for the duration of its existence was Colin Mackenzie.
A stay-behind operation is one where a country emplaces secret operatives or organizations in its own territory, for use in case of a later enemy occupation. The stay-behind operatives would then form the basis of a resistance movement, and act as spies from behind enemy lines. Small-scale operations may cover discrete areas, but larger stay-behind operations envisage reacting to the conquest of whole countries.
The Allied Intelligence Bureau (AIB) was a joint United States, Australian, Dutch and British intelligence and special operations agency during World War II. It was responsible for operating parties of spies and commandos behind Japanese lines in order to collect intelligence and conduct guerrilla warfare against Japanese forces in the South West Pacific. The AIB was formed in June 1942 to coordinate the existing Allied propaganda and guerrilla organisations. The first controller of the AIB was Colonel C. G. Roberts. At its peak the AIB contained men from ten individual services and controlled or coordinated eight separate organisations. The role of the AIB was to obtain information about the enemy, "to weaken the enemy by sabotage and destruction of morale and to lend aid and assistance to local effort to the same end in enemy territories." One member of the AIB was Alfred Deakin Brookes, who went on to become the first head of the Australian Secret Intelligence Service in May 1952.
The Directorate of Military Intelligence is the military intelligence branch of the Defence Forces, the Irish armed forces, and the national intelligence service of Ireland. The organisation has responsibility for the safety and security of the Irish Defence Forces, its personnel, and supporting the national security of Ireland. The directorate operates domestic and foreign intelligence sections, providing intelligence to the Government of Ireland concerning threats to the security of the state and the national interest from internal and external sources.
The special forces of the Australian Defence Force are units of Special Operations Command and associated units of the Royal Australian Navy and the Royal Australian Air Force that conduct and or support special operations to advance and protect the national security of the Commonwealth of Australia. The special forces of Australia have a lineage to a variety of units raised in the Second World War such as the Independent and Commando Companies, Z Special Unit, Navy Beach Commandos, and the Coastwatchers. Australian special forces have most recently been deployed to Iraq in Operation Okra as the Special Operations Task Group, as the Special Operations Task Group in Afghanistan, in Afghanistan in support of the Australian Secret Intelligence Service and regularly for counter-terrorism pre-deploy to locations of major domestic events throughout Australia in readiness to support law enforcement such as the 2014 G20 Brisbane summit.
Spyforce is an Australian television series that aired from 1971 to 1973 on Nine Network. The series was based upon the adventures of Australian Military Intelligence operatives in the South West Pacific during World War II. It was produced by Nine Network in conjunction with Paramount Pictures.
The Army of the Republic of Vietnam Special Forces were the elite military units of the Army of the Republic of Vietnam (ARVN).Following the establishment of the Republic of Vietnam in October 1955, the Special Forces were formed at Nha Trang in February 1956. During the rule of Ngô Đình Diệm, the Special Forces were run by his brother, Ngô Đình Nhu,until both were assassinated in November 1963 in a coup. The Special Forces were disbanded in 1975 when South Vietnam ceased to exist after the Fall of Saigon.
The First Indian National Army was the Indian National Army as it existed between February and December 1942. It was formed with Japanese aid and support after the Fall of Singapore and consisted of approximately 12,000 of the 40,000 Indian prisoners of war who were captured either during the Malayan campaign or surrendered at Singapore. It was formally proclaimed in April 1942 and declared the subordinate military wing of the Indian Independence League in June that year. The unit was formed by Mohan Singh. The unit was dissolved in December 1942 after apprehensions of Japanese motives with regards to the INA led to disagreements and distrust between Mohan Singh and INA leadership on one hand, and the League's leadership, most notably Rash Behari Bose. Later on, the leadership of the Indian National Army was handed to Subhas Chandra Bose. A large number of the INAs initial volunteers, however, later went on to join the INA in its second incarnation under Subhas Chandra Bose.
The Battles and Operations involving the Indian National Army during World War II were all fought in the South-East Asian theatre. These range from the earliest deployments of the INA's preceding units in espionage during Malayan Campaign in 1942, through the more substantial commitments during the Japanese Ha Go and U Go offensives in the Upper Burma and Manipur region, to the defensive battles during the Allied Burma campaign. The INA's brother unit in Europe, the Indische Legion did not see any substantial deployment although some were engaged in Atlantic wall duties, special operations in Persia and Afghanistan, and later a small deployment in Italy. The INA was not considered a significant military threat. However, it was deemed a significant strategic threat especially to the Indian Army, with Wavell describing it as a target of prime importance.
National governments deal in both intelligence and military special operations functions that either should be completely secret, or simply cannot be linked to the sponsor. It is a continuing and unsolved question for governments whether clandestine intelligence collection and covert action should be under the same agency. The arguments for doing so include having centralized functions for monitoring covert action and clandestine HUMINT and making sure they do not conflict, as well as avoiding duplication in common services such as cover identity support, counterespionage, and secret communications. The arguments against doing so suggest that the management of the two activities takes a quite different mindset and skills, in part because clandestine collection almost always is on a slower timeline than covert action.
In United States military doctrine, unconventional warfare is one of the core activities of irregular warfare. Unconventional warfare is essentially support provided by the military to a foreign insurgency or resistance. The legal definition of UW is:
Unconventional Warfare consists of activities conducted to enable a resistance movement or insurgency to coerce, disrupt or overthrow an occupying power or government by operating through or with an underground, auxiliary or guerrilla force in a denied area.
Special forces or special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equipped forces using unconventional techniques and modes of employment".
Netherlands East Indies Forces Intelligence Service (NEFIS) was a Dutch World War II-era intelligence and special operations unit operating mainly in the Japanese-occupied Netherlands East Indies (now Indonesia).
