There are some books which just have a massive impact, for whatever reason.
This story is one of those.
It is based on the true, and truly horrifying, story of the village of Oradour in France which is invaded by the SS during World War 2, under the dubious premise that the inhabitants have had something to do with a Resistance kidnapping of a high ranking SS official.
The story is sensitively told, but it doesn't pull any punches, particularly when the SS are doing their worst. Hence why it is in Senior Fiction.
Highly recommended to those who like Morris Gleitzman's Once series.