Costume designer Nadia Benois was the mother of the star, co-writer and co-director Peter Ustinov (Private Angelo).
Moyna MacGill (Marchesa Dolce) was the mother-in-law of Peter Ustinov (Private Angelo) at the time that the film was made.
Although this is widely regarded as the best of the three feature films Peter Ustinov directed in the half-decade from 1945 (it is also the only one in which he himself has a leading role), he then did not direct another film for over ten years.