Episode #1.1 - S1-E1
Other mistake: The German officer in the pub is described in the credits as an unteroffizier (corporal or, generically, NCO). He actually wears the uniform of an oberleutnant (lieutenant), a commissioned officer.
SS-GB (2016)
1 mistake in Episode #1.1 - chronological order
Starring: Andrew Bicknell, Michael Epp, Trevor White, William Meredith
