There's a video online apparently showing him being interviewed by Voice of Russia, & claiming that NATO was guilty of aggression against Russia. It seems to date from last year.
He's written books. One is about "the demographic war being waged against the white world, the West and France".He thinks the army is the last bastion of French civilisation; he wants France & Europe to be more Christian, & emulate Putin in building churches on military bases.He's an enthusiast for the old French nobility, & has written books about the nobility of Limousin - to which, it seems, his ancestors belonged.
I've not found anything to contradict his claims of military rank. He must be pretty old if his claim of serving in Algeria for three years before its independence is true, but he looks old enough in the video.
Very old-fashioned right-wing nutter.
But - this is weird. How many General Jean du Verdiers are or were there? There's a death notice for one, aged 81, dated 30 Dec 2013 -
Avis de décès - Jean DU VERDIER - Avis obsèques - Versailles (78) - Dans nos coeurs - which matches perfectly the LinkedIn profile. Right age, right background - the lot.
I think someone in Russia has been telling porkies. I suspect they don't realise that he's dead & buried, or maybe they do & don't expect anyone to notice. That interview has been recycled on Russian sites as if it was this year, after his death. Now we have this claim that an apparently dead man has spoken out about the downing of MH17.