Complex sentence: At the Red Cross club, he meets and, despite being married, falls in love with Valerie Russell, daughter of a crusty Brigadier who's been on sick leave since being wounded at Dunkirk.
Split into simpler sentences: At the Red Cross club, he meets and, despite being married, falls in love with Valerie Russell. Valerie is the daughter of a crusty Brigadier who's been on sick leave since being wounded at Dunkirk.