Special forcesSpecial 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". Special forces emerged in the early 20th century, with a significant growth in the field during World War II, when "every major army involved in the fighting" created formations devoted to special operations behind enemy lines.
Marine RaidersThe Marine Raiders were a special operations forces originally established by the United States Marine Corps during World War II to conduct amphibious light infantry warfare. "Edson's" Raiders of 1st Marine Raider Battalion and "Carlson's" Raiders of 2nd Marine Raider Battalion are said to have been the first United States special operations forces to form and see combat during World War II. Despite the original intent for Raiders to serve in a special operations capacity, most combat operations saw the Raiders employed as conventional infantry.
CommandoA 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. Originally "a commando" was a type of combat unit, as opposed to an individual in that unit. In other languages, commando and kommando denote a "command", including the sense of a military or an elite special operations unit. In the militaries and governments of most countries, commandos are distinctive in that they specialize in unconventional assault on high-value targets.
War on terrorThe war on terror, officially the Global War on Terrorism (GWOT), is a global counterterrorism military campaign initiated by the United States following the September 11 attacks and is also the most recent global conflict spanning multiple wars. The main targets of the campaign were militant Islamist and Salafi jihadist armed organisations such as al-Qaeda, the Islamic State, and their international affiliates, which were waging military insurgencies to overthrow governments of various Muslim-majority countries.
CounterinsurgencyCounterinsurgency (COIN, NATO spelling Counter-insurgency) is "the totality of actions aimed at defeating irregular forces". The Oxford English Dictionary defines counterinsurgency as any "military or political action taken against the activities of guerrillas or revolutionaries" and can be considered war by a state against a non-state adversary. Insurgency and counterinsurgency campaigns have been waged since ancient history. However, modern thinking on counterinsurgency was developed during decolonization.
Special Air ServiceThe Special Air Service (SAS) is a special forces unit of the British Army. It was founded as a regiment in 1941 by David Stirling and in 1950, it was reconstituted as a corps. The unit specialises in a number of roles including counter-terrorism, hostage rescue, direct action and covert reconnaissance. Much of the information about the SAS is highly classified, and the unit is not commented on by either the British government or the Ministry of Defence due to the secrecy and sensitivity of its operations.
Office of Strategic ServicesThe 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. The OSS was dissolved a month after the end of the war.
ChinditsThe Chindits, officially as Long Range Penetration Groups, were special operations units of the British and Indian armies which saw action in 1943–1944 during the Burma Campaign of World War II. The British Army Brigadier Orde Wingate formed the Chindits for raiding operations against the Imperial Japanese Army, especially long-range penetration, attacking Japanese troops, facilities and lines of communication deep behind Japanese lines.
SpetsnazSpetsnaz (Спецназ), 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.
CounterterrorismCounterterrorism (also spelled counter-terrorism), also known as anti-terrorism, relates to the practices, military tactics, techniques, and strategies that governments, law enforcement, businesses, and intelligence agencies use to combat or eliminate terrorism. If an act of terrorism occurs as part of a broader insurgency, and insurgency is included in the definition of terrorism, then counterterrorism may additionally employ counterinsurgency measures.