What is the theme in Summer of My German Soldier by Bette Greene?

Family dynamics is another theme in the story. The Bergen family dynamics are complex and difficult. Harry Bergen is a complex man. Charming and flirtatious towards women, regardless of their attractiveness, he is labeled a “ladies’ man” by his siblings, and has chosen for himself an extremely attractive wife from a wealthy family. Raised in brutal poverty, he is a successful businessman although he resents the fact that he had to depend on his father-in-law’s money to start his business.