Un
avocat général est
un [one of many] magistrat placé sous les ordres du procureur général, qui représente le ministère public
[fr.wikipedia.org/wiki/Avocat_général_(France)]
The position of Advocate General (avocat général) ….. Since the French Revolution, they are found in the Supreme Court, the Court of Audit, the Courts of Appeal, and the Assize Courts. [
http://en.wikipedia.org/wiki/Advocate_General]
As contrasted to
À titre
d'avocat en chef de la Couronne [
the only one, the top one], il devrait savoir les réponses...
[
http://www.parl.gc.ca/HousePublications/Publication.aspx?Doc...]
that may be Canadian French, but they are the nearest to the source and their institutions are closer to the USA model so “avocat
en chef” is on the right track.