When Regina and sergeant Taylor meet Gordon Walsh they show him a certificate stating Sarah's time in the concentration camp Dachau. But previously we have learned that she actually was in Ravensbruck - it was René who were in Dachau.
The RAAF uniform worn by Flying Officer Gordon Walsh is incorrect. He wears a white shirt where as the correct shirt was blue. The cap he wears is not an RAAF Officer's Cap, peak and badge are incorrect.