Alexander's position in front of the War Surplus store changes between shots.
When Eddie and Nina sit at a table and order drinks, Nina orders a Rob Roy, and Eddie says he'll have the same. But they are served two very different drinks; hers in a long stemmed glass, and his with a regular glass and a shot on the side.
The train depicted as taking Eddie from San Francisco (where Letterman Army Hospital was) to Los Angeles is actually a Pennsylvania Railroad streamlined K4 locomotive, shown on their three-track mainline. This shot has been used in other films.