What Is 23 Special Air Service Regiment

Overview

The 23 Special Air 23 Special Air Service Regiment (Reserve), commonly known as 23 SAS, is a vital component of the United Kingdom's special operations capability. As a reserve unit within the British Army, it provides trained operatives who can augment the regular Special Air Service (SAS) during times of heightened operational demand.

Unlike conventional reserve units, 23 SAS personnel are expected to meet the same high standards of physical fitness, tactical proficiency, and mental resilience as their regular counterparts. The regiment operates under the command of United Kingdom Special Forces (UKSF), ensuring seamless integration with other elite units during joint missions.

• Formation year: 23 SAS was officially established in 1947 as part of the Territorial Army, evolving from wartime special forces units.
• Headquarters: The regiment is based at Stirling Barracks in Hereford, sharing facilities with the regular 22 SAS.
• Command structure: It falls under the operational control of the United Kingdom Special Forces (UKSF), alongside units like the SBS and SFSG.
• Recruitment: Volunteers come from both civilian backgrounds and ex-regular military personnel, all of whom must pass the SAS selection process.
• Deployment: Members may be called upon for overseas operations, including counter-terrorism, reconnaissance, and hostage rescue missions.

How It Works

23 SAS functions as a high-readiness reserve force capable of deploying on short notice to support national security objectives. Its operational model relies on part-time soldiers who train regularly and maintain peak readiness.

• Selection: Candidates must complete the 4-week Initial Test and the grueling Selection course in the Brecon Beacons, identical to 22 SAS.
• Training: Reservists undergo annual continuous training blocks and periodic weekend drills to maintain skills in survival, combat, and navigation.
• Specializations: Operators can train in close protection, urban warfare, and long-range reconnaissance, depending on mission requirements.
• Call-up: Personnel may be mobilized under full-time service orders during national emergencies or international conflicts.
• Integration: The unit is designed to seamlessly integrate with regular SAS squadrons, sharing intelligence, tactics, and equipment.
• Security: All members are bound by the Official Secrets Act and operate under strict operational security protocols.

Comparison at a Glance

Below is a comparison of 23 SAS with related UK special forces units:

This table highlights how 23 SAS fills a unique niche as a reserve special operations unit. While less publicly visible than 22 SAS, it provides critical surge capacity and specialized skills during prolonged operations.

Why It Matters

The existence of 23 SAS underscores the UK's commitment to maintaining a flexible, scalable special forces capability. In an era of asymmetric threats and persistent global instability, reserve units like 23 SAS offer cost-effective force multiplication.

• Force multiplier: 23 SAS allows the UK to expand special operations capacity without maintaining a larger full-time force.
• Specialized skills: Members often bring civilian expertise in languages, engineering, or medicine that enhance mission effectiveness.
• Deterrence: The regiment contributes to the UK's strategic deterrence posture by increasing operational unpredictability.
• Global reach: 23 SAS has supported operations in the Balkans, Iraq, and Afghanistan, proving its international utility.
• Recruitment pipeline: It serves as a talent pool for regular UKSF units, with some reservists transitioning to full-time roles.
• Resilience: The unit enhances national resilience by providing specialized response capabilities during domestic emergencies.

As global security challenges evolve, the role of reserve special forces like 23 SAS will likely grow in importance, ensuring the UK maintains a robust and adaptable defense posture.