In this scene a he is a republican sniper and that ends up killing his own brother because his brother was also a sniper. This shows the theme, In war soldiers are coldblooded and the enemy might shock you. He didnt have a choice because even if he knew it was his brother if he didnt shoot he wouldve been killed.
In this scene, Roger tries to steal money from Mrs. Jones instead of her reporting it, she takes him home and feeds him. This shows the theme, "Thank You Ma'am" the theme is to help people when they are down through kindness. Through kindness Roger learns that he doesn't have to steal to get what he wants that people are willing to help him.