with more than 5,000 personnel from the two countries coming together for Exercise Griffin Strike.

The exercise, which involves a joint French/UK headquarters planning and executing military activity for the first time, will see the CJEF demonstrate ‘full validation of concept’. That means it will be available for bilateral, NATO, EU, UN or coalition operations.

Michael Fallon and his French counterpart Jean-Yves Le Drian visited Exercise Griffin Strike today to witness land, sea and air elements operating as a rapidly deployable UK-France joint force.

The CJEF has been developed since 2010 as a product of the bilateral Lancaster House Treaty and is designed to operate for up to 90 days.

Source: Defence Secretary welcomes deployable UK-France joint force – News stories – GOV.UK

It’s joint, meaning it has land, sea and air components, but I couldn’t find an organisational structure anywhere.