The main purpose of the event would to show a garrisoned occupying force in peace-time rather than trying to get a battle show.
The garrison events we do under our French persona are Allied-free and do permit us to get involved more closely with our historical characters and see what an ordinary military day in those times was like (as battles were not the norm for soldiers...thankfully for them). I believe that my contact wants to do the same but with Allies.
Mind you, he organises one of these French garrison weekends further down the coast which he would dearly love to developpe into a full-on 24hr living-history siege but that's not for a while yet.
....French forces invading their own country....
...sort of reminds me of the FFA at the D-Day landings.