Just read that Colonel Jean-Patrice O'Sullivan was in charge of Infantry units in the Thionville Sector of the Maginot line fighting June 1940. ( ATB BITW page 549.) I wondered how a French officer came by an Irish surname, had a Google and found this. Chambre de Commerce et d'Industrie Franco-Irlandaise There are over 1 500 of these ‘historical Irish’ descendants in France, while the more recently established Irish community is over 30 000 strong in France today I also wondered in having a suranme like that did it cause them problems during the Occupation?