The number of professional fire brigade officers and non-commissioned officers in the departmental fire brigade is determined on the basis of a reference workforce set at 31 December of the previous year comprising professional fire brigades as well as volunteer fire brigades in the departmental or territorial fire and rescue service up to a limit of twice the number of professional fire brigades, under the following conditions:
<1° One lieutenant-colonel for at least 900 firefighters;
2° One commander for at least 300 firefighters;
3° One captain for at least 60 firefighters;
4° One lieutenant for at least 20 firefighters;
5° One non-commissioned officer for at least 4 non-officer firefighters.