The story is set in Switzerland. The Swiss flag is square, red, with a white cross (bold, equilateral) in the center. However, the one shown throughout the episode is the Norwegian flag (red with an indigo blue Scandinavian cross fimbriated in white that extends to the edges of the flag).
Col Ryan has strikingly light blue eyes. In the flashbacks young Ryan has dark eyes.
The picture of the SS officer showed the national eagle above the right breast pocket of the tunic, as worn by the army. The SS wore it on the upper left sleeve.