In La grande vadrouille (what does it mean? The Great Wandering?), Bourvil played a painter and Louis de Funès a chief conductor who is going to hold a concert in the Paris Opera House. Set in WW2, they help three RAF crews, whose plane has been shot down by the Germans. The British pilots came to Paris for Operation "Tea For Two" - which turns out a failure. The painter and the conductor help them escape to the south, to the unoccupied France. All the way, the conductor look down on the painter, who is a manual labourer.
My favourite scene is when Bourvil and Louis de Funès play with the Germans some sort of game, like toad jumping but using chairs. (pic attached) It's one of the funniest scene I have ever seen.