Generated by GPT-5-mini| Commando Helicopter Force | |
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![]() Sam Wise · CC BY-SA 2.0 · source | |
| Unit name | Commando Helicopter Force |
| Dates | 1999–present |
| Country | United Kingdom |
| Branch | Royal Navy; Fleet Air Arm |
| Type | Rotary-wing aviation |
| Role | Battlefield support; amphibious assault; troop transport; casualty evacuation |
| Size | Squadron-level composite |
| Garrison | RNAS Yeovilton |
| Nickname | CHF |
| Equipment | Westland Wessex; Westland Sea King; Merlin HC3; AgustaWestland AW101; Agusta A109 |
| Battles | Falklands War; Iraq War; War in Afghanistan (2001–2021); Kosovo War; Operation Granby |
Commando Helicopter Force
The Commando Helicopter Force is a UK rotary-wing aviation formation within the Royal Navy's Fleet Air Arm, formed to provide dedicated helicopter support to 1st (United Kingdom) Division and 3 Commando Brigade Royal Marines during amphibious and expeditionary operations. It integrates assets from multiple squadrons to perform troop lift, assault support, logistics, and medical evacuation for operations ranging from the Falklands War aftermath to the War in Afghanistan (2001–2021) and Iraq War. The force operates from RNAS Yeovilton, deploys on HMS Ocean (L12) and Queen Elizabeth-class carriers, and works closely with Royal Marines, British Army Air Corps, and allied aviation units.
The genesis of the unit traces to post‑Cold War restructuring that consolidated rotary assets previously dispersed across Royal Air Force and Royal Navy commands after lessons from Falklands War, Gulf War, and Balkan Wars. CHF formally coalesced in the late 1990s to deliver persistent support for 3 Commando Brigade Royal Marines during expeditionary operations like Operation Palliser in Sierra Leone and interventions in the Kosovo War. During the Iraq War and the War in Afghanistan (2001–2021), CHF crews and airframes were routinely deployed to support Operation Telic and Operation Herrick, partnering with units such as Joint Helicopter Command and NATO formations including ISAF. Equipment transitions mirrored doctrinal change: retiring the Westland Wessex and upgrading from Westland Sea King variants to modern Merlin HC3/Merlin HM2 and AgustaWestland AW101 platforms, aligning CHF with amphibious requirements seen in exercises like Exercise Joint Warrior and Operation Atalanta taskings.
CHF is organized around several squadrons drawn from the Fleet Air Arm and administratively supported by Naval Air Station Yeovilton structures. Squadrons historically associated include No. 845 Naval Air Squadron, No. 846 Naval Air Squadron, and No. 847 Naval Air Squadron, each embedding flight elements tailored to assault, casualty evacuation, and logistics. Command relationships span the First Sea Lord's aviation authorities and operational command through the Commander Amphibious Task Group when embarked, while training and integration occur with establishments such as Commando Training Centre Royal Marines and Royal Navy Air Station Culdrose. CHF maintains liaison with the Royal Navy's carrier strike assets like HMS Queen Elizabeth (R08) and joint commands including Joint Helicopter Command to ensure interoperability across expeditionary campaigns.
CHF has operated an evolving fleet: legacy types included the Westland Wessex for troop lift and the Westland Sea King for assault and search-and-rescue roles; modernisation introduced the AgustaWestland AW101/Merlin HM2 series for increased range, payload, and avionics. Secondary types such as the Agusta A109 provided light utility and training capability in certain periods. Shipborne operations require equipment integration with amphibious platforms like HMS Bulwark (L15) and HMS Albion (L14), utilising fast-roping, deck-handling equipment, and avionics suites compatible with NATO standards. Defensive aids, sling-load kits, and medical evacuation configurations enable CHF to perform roles demonstrated in deployments with Royal Marines and multinational partners including United States Marine Corps aviation elements.
CHF has supported amphibious assaults, humanitarian relief, and expeditionary warfare across multiple theatres. Notable deployments include support to Operation Palliser in Sierra Leone, air mobility elements during Operation Telic in Iraq War, troop lift and CASEVAC for Operation Herrick in Afghanistan, and maritime security patrols tied to Operation Atalanta. CHF squadrons have embarked on HMS Ocean (L12) and coalition amphibious ships during exercises such as Exercise Sea Breeze and Exercise Joint Warrior, and have operated from deployed airfields in collaboration with NATO and coalition forces including ISAF command elements.
Training pipeline and doctrine reflect joint amphibious concepts taught at institutions like Commando Training Centre Royal Marines and implemented through joint exercises with Royal Marines, British Army Air Corps, and allied units such as United States Marine Corps and Royal Netherlands Navy. Pilots and aircrew undergo conversion training on types like the Merlin HC3/Merlin HM2 at RNAS Yeovilton and mission-specific preparation for deck-landing certification on ships including HMS Queen Elizabeth (R08). Doctrine emphasises expeditionary manoeuvre, ship-to-shore integration, casualty evacuation procedures coordinated with DEFRA-adjacent frameworks, and interoperability standards set by NATO.
CHF history includes accidents and incidents encountered across operational tempo: shipborne deck‑landing mishaps, hard landings during tactical insertions in Afghanistan, and mechanical failures leading to emergency landings during Iraq War deployments. Investigations have involved authorities such as the Military Aviation Authority and led to airworthiness and procedural updates across squadrons like No. 845 Naval Air Squadron and No. 846 Naval Air Squadron to improve safety, maintenance regimes, and crew resource management.