Factual error: If you look at the band playing in the Regal Club the night the boy's mother first visits, the night where they first bring on the donkey, you'll notice that the drum kit used by the drummer in the band is, from what we can see, a 1980's Pearl kit, far too modern. (00:39:00)
Factual error: Aunt Rose died in 1955 and not when Reggie and Frances were on their honeymoon. (02:44:35)
Factual error: The recruits' hair is far too long when they parade after being conscripted. In those days Army recruits practically had their heads shaved - sideburns were shaved off to one inch above the ear (Army regulations). Curiously, this applies to the Staff Sergeant too - his hair would barely be visible under his hat.