After WW2, like most countries building new houses and reassembly of busted up houses was the necessity. In France they had to import builders/electricians and plumbers etc from as far afield as Sweden and Scotland. In fact the house that we rent right now (c.1951), the wooden staircase was built by a guy from Glasgow, the electrics a guy from Goteborg and all the internal plumbing and kitchen by a Chinese refugee who escaped the numerous death camps situated around Pamiers and Lavalanet.immediately after WWII i imagine wheelbarrow pushers, farmers, & construction workers were much more in demand.
If you ever get the chance to visit you'll see people from every nationality represented in the (reconstituted) graveyard: Turks, Americans, Russians, British, Japanese, Chinese etc. The Nazis were not fussy which politicals or races or religions they murdered. It's still a thing very few people 'au coin' are even willing to admit to.