Corrected entry: At the beginning of the movie, there is a timber factory with nice timber on a lot of staples, this is something that was not possible at that time of the war. All the timber had been used.
New this month Correction: That's just ridiculous. They still made timber at timber factories and they need wood for that, which is stacked at the factory. It's not like all wood gets shipped to the war the moment the tree is cut down. People still need furniture, doors, housing, boats. Life goes on during a war.
Corrected entry: We see the Royal Navy requisitioning small boats in harbour and crewing them with naval personnel. Rather than wait for this to happen, Mark Rylance decides to set sail for Dunkirk himself. However, when the flotilla of other small craft are seen, none of them are crewed by navy personnel.
New this month Correction: A large number of the little ships were manned solely by civilians due to a lack of Naval personnel. And in fact, we see several of them manned by naval crews.