FORCUSCO is headed by a general officer with the title of Admiral commandant Les fusiliers marins et commandos (ALFUSCO).
Battalions and companies of sailors are dedicated to the protection of sensitive naval sites (eg military ports, naval aviation bases, communications transmission stations, ammunition depots).
The sailors are also an integral part of buildings as domestic service - called "bidellerie" in navy slang.
There are seven companies of sailors (CIFUSIL), which provide protection for the following sites: These seven companies send detachments who take turns every four to six months to ensure the protection of the communications centers of Fort-de-France, Mahina Mahina Super and around Papeete, of Ouen Toro in Noumea, and Rufisque near Dakar.
The Commandos Marine are trained to targeted actions in places where it is not feasible or appropriate to deploy a larger force.