"French people will love correcting you (in fact they formed a passion for that since the British caught Napoleon at Waterloo.....

I think it may go back further than that. My French wife's Grandfather used to brag all the time about DuGuesclin (Bertrand DuGueselin c. 1320 – 13 July 1380, a Breton knight and French military commander during the Hundred Years' War), who really gave it to "Les Anglais".

In my wife's department (Herault) I've heard some pejorative remarks about people from the UK but I never heard them rag the Germans, even though the people were starving in 1944 due to restrictions imposed by the occupying forces and foraging for food was very risky due to the vast quantity of landmines planted. Some were even forced to house German troops.

I haven't them say anything bad about Americans (Other than our politicians and our political policies) as there are relatively few of us in Herault. They do think we talk "nasely", which I find terribly ironic.