Which special forces selection is actually hardest?
The honest answer is "they're different." A Korean 707th selectee, a French combat swimmer, and a Green Beret all sit at the top of their pipelines — through completely different filters. Here's what each one actually looks like, drawn from publicly-published service-branch material and where applicable defence-press references for the figures the units themselves do not publish.
A note on numbers
Most special operations forces directorates do not publish formal selection attrition statistics. Where a percentage is referenced here, it is either pulled from official service-branch material (rare) or framed as "reported in defence press / not officially fixed." We do not invent numbers. If a pipeline length, course name, or unit lineage is approximate, we mark it that way.
What the comparison actually tells you
01"Hardest selection" is not a single global ranking. UK SAS, French Commandos Marine Hubert, US Delta selection, Israeli Sayeret Matkal Gibbush, and Korean 707th all operate at the very top of difficulty — through different filters.
02Stated pass-rate numbers are usually unofficial defence-press references, not policy-published figures. Most special forces directorates do not publish selection statistics.
03Selection is not the pipeline. Passing SFAS, BUD/S Phase 1, or the SAS Hills phase is the start of the work, not the end. Operator status sits one to three years downstream of selection in most pipelines.
04Maritime SOF (SEALs, SBS, Commandos Marine Hubert, Shayetet 13, GRUMEC, MARSOF, MJK) carry the longest qualification pipelines because combat-diver training is its own multi-month course on top of basic selection.
05Pay is rarely the reason. Across every country here, the special-pay supplement is real but modest compared to the time, body, and family cost of the pipeline.
06The all-arms model (UK SAS, Australian SASR, NZSAS, Canadian JTF2 selection) draws applicants from across the full military; the closed-pool model (DEVGRU, Delta in practice, Sayeret Matkal) draws from already-qualified pools.
Special operations forces by country
🇺🇸
United States
6 units
1st SFOD-D (Delta Force / CAG)US Army / JSOC
Mission
Direct action, counter-terrorism, hostage rescue, special reconnaissance
Selection / pass rate
Not publicly published; widely reported as very low among already-qualified SOF applicants
Selection length
Selection course approximately 3–4 weeks of land navigation and assessment phase, followed by Operator Training Course (OTC) of approximately 6 months
Pipeline
Applicants generally already-qualified SOF or top-tier infantry/Ranger background; OTC follows successful selection
Pay structure
Standard rank pay + JSOC assignment pay + special duty assignment pay
Naval Special Warfare Development Group (DEVGRU / "SEAL Team Six")US Navy / JSOC
Mission
Direct action, counter-terrorism, maritime CT, hostage rescue
Selection / pass rate
Closed selection from already-qualified SEALs; rate not publicly published
Selection length
Green Team training pipeline approximately 9 months
Pipeline
SEAL qualification → Green Team selection → squadron assignment
Pay structure
Standard rank pay + special duty assignment pay
Special Forces (Green Berets)US Army Special Operations Command (USASOC)
Mission
Unconventional warfare, foreign internal defence, direct action, special reconnaissance
Selection / pass rate
Special Forces Assessment & Selection (SFAS) reported attrition rates of roughly 60–70% historically; figures vary by class
Selection length
SFAS 24 days; Special Forces Qualification Course (SFQC) approximately 12–18 months depending on MOS and language
Pipeline
SFAS → SFQC (small unit tactics, MOS phase, Robin Sage, language, SERE) → group assignment
Pay structure
Standard rank pay + foreign language proficiency pay + jump pay
Sea, Air, and Land Teams (SEALs)Naval Special Warfare Command
Mission
Special reconnaissance, direct action, unconventional warfare, maritime ops
Selection / pass rate
BUD/S attrition has historically run approximately 70–80% across the full pipeline including SQT
22 Special Air Service Regiment (22 SAS)UK Special Forces / Directorate of Special Forces
Mission
Counter-terrorism, special reconnaissance, direct action, military assistance
Selection / pass rate
Selection attrition historically reported in defence-press references at approximately 90% across the full pipeline; UK MoD does not publish official figures
CONUS course Cours des Nageurs de Combat for Hubert: very high attrition; commando-marine course attrition also significant; figures not publicly fixed
Selection length
Cours commando marine approximately 6 months; Commando Hubert combat-swimmer specialty additional intensive selection
Pipeline
From Marine nationale; specialised paths for combat divers (Hubert)
Pay structure
Indemnité de service en campagne + specialty supplements
1er Régiment de parachutistes d'infanterie de marine (1er RPIMa)Armée de Terre / COS
Mission
Direct action, special reconnaissance, hostage rescue, action contre terre
Selection / pass rate
Selection process strict; specific rate not publicly fixed
Selection length
Specialty training extends over many months
Pipeline
Drawn from Armée de Terre
Pay structure
Standard pay + ISC + parachute supplement
Commando Parachutiste de l'Air n°10 (CPA 10)Armée de l'air et de l'espace / COS
Maritime special operations, special reconnaissance, direct action
Selection / pass rate
Comparable to FSK; very competitive
Selection length
Multi-year qualification pipeline including combat diver
Pipeline
From Sjøforsvaret
Pay structure
Standard + specialty supplements
Source: forsvaret.no spesialstyrker
🇳🇱
Netherlands
2 units
Korps Commandotroepen (KCT)Koninklijke Landmacht
Mission
Direct action, special reconnaissance, military assistance
Selection / pass rate
Elementaire Commando-Opleiding (ECO) attrition historically reported around 70%
Selection length
ECO approximately 12 weeks; full operator pipeline (VCO etc.) longer
Pipeline
From Koninklijke Landmacht volunteers
Pay structure
Defensie pay + commando supplement
Netherlands Maritime Special Operations Forces (NLMARSOF)Korps Mariniers
Mission
Maritime CT, direct action, special reconnaissance
Selection / pass rate
Comparable to KCT, with maritime emphasis
Selection length
Marinier basic + MARSOF pipeline
Pipeline
From Korps Mariniers
Pay structure
Standard + specialty pay
Source: defensie.nl
🇮🇹
Italy
4 units
9° Reggimento d'assalto paracadutisti "Col Moschin"COFS (Comando interforze per le operazioni delle forze speciali)
Mission
Direct action, special reconnaissance, hostage rescue
Selection / pass rate
Selezione molto severa; tassi specifici non pubblicati
Selection length
Col Moschin pipeline measured in years
Pipeline
Drawn from Esercito Italiano paratroop brigade Folgore
Pay structure
Standard + specialty supplements
GOI / Comsubin (Gruppo Operativo Incursori)Marina Militare
Mission
Maritime CT, hostage rescue, combat diving
Selection / pass rate
Extremely competitive
Selection length
Multi-year pipeline including combat-swimmer qualification
Pipeline
From Marina Militare
Pay structure
Standard + maritime/dive supplements
17° Stormo IncursoriAeronautica Militare
Mission
CSAR, terminal attack control, special reconnaissance
Selection / pass rate
Severa selezione
Selection length
Air Force special operations pipeline
Pipeline
From Aeronautica
Pay structure
Standard + specialty supplements
GIS (Gruppo di Intervento Speciale)Arma dei Carabinieri
Mission
Counter-terrorism, hostage rescue
Selection / pass rate
Highly selective
Selection length
Carabinieri + GIS selection
Pipeline
From within Carabinieri
Pay structure
Carabinieri pay + specialty
Source: difesa.it COFS; carabinieri.it
🇪🇸
Spain
2 units
Mando de Operaciones Especiales (MOE) — GOEEjército de Tierra
Mission
Direct action, special reconnaissance, military assistance
Selection / pass rate
Curso de Operaciones Especiales (COE) attrition described in defence press as substantial; figures not officially fixed
Selection length
COE approximately 9 months
Pipeline
Drawn from Ejército de Tierra volunteers
Pay structure
Standard + complementos
Unidad de Operaciones Especiales (UOE) — Infantería de MarinaArmada Española
Mission
Maritime SOF, reconnaissance, direct action
Selection / pass rate
Highly competitive within Marine corps
Selection length
UOE selection course
Pipeline
From Infantería de Marina
Pay structure
Standard + specialty
Source: defensa.gob.es
🇰🇷
South Korea
3 units
707th Special Mission BrigadeROK Army Special Warfare Command
Mission
Counter-terrorism, hostage rescue, direct action
Selection / pass rate
Selection from already-qualified ROK SF and other specialised volunteers; specific figures not publicly published
Selection length
Multi-month assessment and operator training
Pipeline
From ROK SWC
Pay structure
Standard + specialty allowances
Underwater Demolition Team / SEAL (UDT/SEAL)ROK Navy Special Warfare Flotilla
Mission
Maritime SOF, EOD, reconnaissance
Selection / pass rate
Pipeline reported in Korean defence press as very demanding
Selection length
Multi-month dive and combat training pipeline
Pipeline
ROK Navy entry
Pay structure
Standard + specialty allowances
ROK Army Special Forces Brigades (특전사)ROK Special Warfare Command
Mission
Unconventional warfare, special reconnaissance, direct action
Selection / pass rate
Competitive volunteer entry beyond conscript path
Selection length
Initial commando course followed by specialty training
Pipeline
Volunteer entry from conscript pool and direct
Pay structure
Standard + airborne/specialty
Source: mnd.go.kr; ROK MND publications
🇯🇵
Japan
2 units
Special Operations Group (特殊作戦群)JGSDF
Mission
Counter-terrorism, special reconnaissance
Selection / pass rate
JSDF does not publicly publish selection statistics
Selection length
Multi-year pipeline
Pipeline
From JGSDF
Pay structure
Standard JSDF pay + specialty
Special Boarding Unit (特別警備隊 — SBU)JMSDF
Mission
Maritime CT, vessel boarding, counter-piracy
Selection / pass rate
Highly selective; figures not published
Selection length
Multi-year pipeline including dive qualification
Pipeline
From JMSDF
Pay structure
Standard + specialty
Source: mod.go.jp
🇳🇿
New Zealand
1 unit
1st New Zealand Special Air Service Regiment (NZSAS)NZ Army
Mission
Special reconnaissance, direct action, counter-terrorism
Selection / pass rate
NZSAS selection course historically reported in NZDF publications and press at very high attrition (often quoted around 90%)
Selection length
Selection 9 days; cycle of cycles continuation training extends across many months
Pipeline
All-arms selection from NZDF
Pay structure
Standard rank + SAS allowance
Source: nzdf.mil.nz
🇧🇷
Brazil
3 units
Comando de Operações Especiais (COpEsp) — 1° Batalhão de Forças EspeciaisExército Brasileiro
Mission
Special reconnaissance, direct action, unconventional warfare
Selection / pass rate
Curso de Forças Especiais (CFE) and Curso de Ações de Comandos (CAC) attrition reported in Brazilian defence press as very high
Selection length
CFE + CAC pipelines measured in months each; full operator qualification across years
Pipeline
Volunteer entry from Exército
Pay structure
Standard + specialty supplements
GRUMEC (Grupamento de Mergulhadores de Combate)Marinha do Brasil
Mission
Maritime SOF, combat diving
Selection / pass rate
Highly selective combat-diver pipeline
Selection length
CMC (Curso de Mergulhadores de Combate) approximately 1 year
Pipeline
From Marinha
Pay structure
Standard + dive/specialty supplements
COMANF (Comandos Anfíbios)Corpo de Fuzileiros Navais
Mission
Amphibious commando operations
Selection / pass rate
Highly selective
Selection length
COMANF course approximately 6 months
Pipeline
From Fuzileiros Navais
Pay structure
Standard + amphibious specialty supplements
Source: eb.mil.br; marinha.mil.br
Pipelines, course names, and unit structure evolve. If you've completed selection in any of these units and want to correct a detail (we will never publish anything that compromises operational security), email us.