Why did Patty notice Frederick Anton Reiker when he came to Bergen Department store?

When a group of POWs are brought into the store to purchase hats, one young man is called upon to translate. As the others are making their purchases, Patty waits on him. She finds him polite and friendly, as well as handsome. In her mind, he doesn’t seem to be anything like the Nazis she was warned against. He introduces himself as Frederick Anton Reiker, or Anton to his friends