Which character will later die in France our town?

In Thornton Wilder's play "Our Town," the character who later dies in France is Lieutenant Joseph Crowell Jr. He is mentioned in the third act as having been killed in World War I, highlighting the play's themes of loss and the impact of war on small-town life. His death serves to underscore the fragility of life and the inevitability of mortality, which are central themes throughout the play.