Yes, Saliothomas - I'm about halfway through The Retreat at the moment. I read The Battle as part of my Prix Goncourt Project, and reviewed it briefly on my website here:
obooki’s page Blog Archive The Battle, by Patrick Rambaud
I was impressed enough by the first one that I went out and bought the other two. Very enjoyable. - I don't suppose his parodies of Barthes have been translated into English - they sound interesting. I noticed another book by him, called Comme des Rats, in my local library. Might have a go at it some time, even if it's in French.