Article L1424-15 of the French General Code of Local Authorities
When a commune or a public establishment for inter-communal cooperation has requested, by decision of its deliberative body, the attachment of a communal or inter-communal corps to the departmental corps, the departmental or territorial fire and rescue service proceeds with the attachment of the volunteer firefighters under the conditions set by its board of directors. Responsibilities for hiring and managing the volunteer firefighters mentioned in the previous paragraph are transferred…