Has anyone read this book about the Resistance ?

Yes, I've read it but can't remember the title.

I'll have a think and look later to see if it's on my Kindle.

I think it was WW1.

Was it The Girl You Left Behind by Jojo Moyes?

The Girl You Left Behind by Jojo Moyes I think. The husband was an artist and painted the portrait before joining up. It became the subject of a court case about Goods stolen during a war.
It goes between WW1 and present day.

I love stories about the Resistance. A truly courageous bunch of people of which 36,000 were killed.

No, it was WW1 not WW2.
The French were starved into submission.

Thank you very much . My memory worse than I thought if I got the wars muddled up! By the way for people who like books about the resistance , I can recommend Liberation by Imogen Kealey based on story of a woman nicknamed The White Mouse by the gestapo. H and I both enjoyed it.

Any recommendations about fiction based on similar topics gratefully received!

When we lived in France I read a lot of books about the Resistance in WW2. We were in the SW and they were very active there.
Often a tragic story because if they were caught, the whole village suffered. German retribution. it broke up families.
But all non-fiction.
I read the one about the White Mouse - Nancy Wake.