In February 1940 the Air Ministry constructed an aerodrome on the site of Chivenor farm near a civilian airfield. RAF Chivenor opened on 25 October 1940 within No. 17 Group, Coastal Command. There were two units based there initially, No. 3 Operational Training Unit RAF and No. 252 Squadron RAF, both operating Bristol Beaufighters, Bristol Blenheims and Bristol Beauforts. Originally a civil airfield opened in the 1930s, the site was taken over by the Royal Air Force in May 1940 for use as a Coastal Command Station, and was known as RAF Chivenor. After World War II, the station was largely used for training, particularly weapons training. During the 1950s and 1960s, No. 229 Operational Conversion Unit used Hawker Hunter aircraft for training. In 1974 229 OCU left for RAF Brawdy, with Chivenor placed into "care and maintenance" status for rebuilding, though No. 624 Volunteer Gliding Squadron continued to fly from there. The RAF returned in 1981, with 2 Tactical Weapons Unit and their BAE Hawks, moving in from RAF Lossiemouth. In 1992 2 TWU was renamed as 7 FTS before leaving in 1994 to merge with 4 FTS at RAF Valley, and the airfield was handed over to the RM.
The Commando Logistic Regiment's role is to ensure the re-supply of ammunition, water, fuel and food, known as "combat supplies" to the ground forces, and to provide first-line medical care to any service person or civilian. It also provides specialist services to sustain the brigade's operation.
A Better Defence Estate, published in November 2016, indicates that the Ministry of Defence will dispose of the RMB Chivenor by 2027. However, in March 2017, the then Secretary of State for DefenceMichael Fallon stated that no final decision had been taken. Following a concerted campaign to keep the base open and this resulting in a review, the Ministry of Defence announced in February 2019 that the base would stay open.
RMB Chivenor in the media
On 21 November 2008 the BBC Top Gear series filmed segments near to Chivenor. In the segments the presenter Jeremy Clarkson takes part in a mock battleon the beach at Instow with around 30 marines from Chivenor and elsewhere. The Sea Kings from 22 squadron A-Flight at Chivenor took a starring role in Episode 6 of the National Geographic Channeldocumentary television seriesSea Patrol UK, with B-Flight of 22 Squadron at AAC Wattisham alongside Royal Navy and Coastguard units. The 2011 BBC television series The Choir: Military Wives featured Chivenor. The programme documented choirmaster Gareth Malone forming a choir of wives and partners of Chivenor personnel deployed on active service in the Afghanistan War. In forming a choir, Malone aimed to raise the women's morale and raise their profile in the public perception. The song Wherever You Are was recorded by the Military Wives Choir and was released as a single in December 2011, with proceeds going to the Royal British Legion and SSAFA Forces Help.