Themes revolve around the concepts of "right" and "wrong" and beg questions about who defines them and what happens when people's ideals are at odds. Self-sacrifice is another theme that relates to characters who put themselves in the middle of political issues, personal disagreements, and a war. Those who seem to have it all often are the most unsettled. The story introduces viewers to the historical significance of events in England during the time leading up to World War I.
Christopher values duty and trustworthiness over his own sense of happiness, and it's unclear whether he regrets his resulting decisions. Other characters aren't so admirable, often engaging in affairs, deceit, and manipulation for their own gain.
War scenes marked with gunfire, grenade explosions, and some hand-to-hand combat. Dead and dying bodies litter the ground, the threat of death looms powerful, and injuries that are shown are gory. Some familiar characters are killed.
Rampant extramarital affairs, especially in Sylvia's case. She's seen with multiple partners over the course of the story, and her loose morals are a major plot point. Couples are shown kissing, fondling, removing each other's clothes (breasts are visible, but no other sensitive areas), and presumably prepping for intercourse.
Sporadic swearing including "bitch," "whore," "dammit," "Goddammit," and "a--hole."
Drinking, Drugs & Smoking
Adults typically drink in social gatherings, and men often sip from a flask throughout the day. An army corporal's drinking problem causes trouble for his battalion.