When the Sergeant (Vic Tayback) rescues Napoleon Solo, Solo calls him by his rank. But Solo couldn't know he's a Sergeant. Solo's back is to the door, and he can't see who has come in.
When Illya is monitoring the conversation between the Seargent (Vic Taback) and Solo, the paper he is looking at is a Sam's Photofact schematic (technician's repair diagram) of a television set.
Solo tells Demos that he is looking to recover a painting that was stolen from him during World War II. Solo, presuming he is the same age as actor Robert Vaughn, would only be ages 8-13 during the war.