This book by National Geographic Kids is aimed at children aged 8+ is a UK-centric breezy overview of World War II from Appeasement to the dropping of the A-bombs. There are plenty of pictures and it’s written in a way that’s easy to understand, but I was surprised there’s no mention of the Bletchley Park code breakers or the black market that surrounded rationing and it conflates sonar and radar, when they’re subtly different.