Funniest Line
My favourite line (being Canadian) was when the Canadian soldier gives the older sister the ring and she says "You expect me to just wait here for the rest of the war and stare at a ring while you meet some French girl who speaks your own language?" LOL. It was just awesome because even though French is an official language here clearly he had been speaking English as his first language. I thought that line was great because it seemed like a realistic thing a sixteen year old naive girl would say.
Number 2 best line is the little boy watching their house burning and asking the ARP man: "Will all my shrapnel melt?" To which the man simply replies: "I shouldn't think so." LOL. This movie did such a good job of getting in the head of children.