Trivia: When Thomas Two-Stroke is inspecting the car, he surreptitiously breaks something, then claims he has found the problem and shows them the offending piece of the engine. When the two Englishmen ask what it is, he replies that he doesn't know what it is in English, but gives them the supposed name in Welsh. Translated literally, it means "what's it called" - basically, a thingamijig.
Continuity mistake: In the scene in the church at the end of the movie, Morgan comes in and sits beside the headmaster, but when the congregation leaves there is a woman sitting beside him.
Johnny Shellshocked: In France, we dug trenches ten miles long. We took earth from here and made hills there. We moved entire fields. You wouldn't believe what we did. It's possible. It's just hard work.