This series is my favorite in the Upstairs Downstairs canon.  The residents of 165 Eaton Place face the loss and hardships of World War I bravely.  Several important themes, such as duty, honor, love and loss are explored through the lives of several characters.  War comes home, literally, when a Zeppelin drops a bomb on Eaton Place.  James, Edward, Georgina, and most tragically Rose and Hazel are all victims of the war's bloodlust.  There are some extremely fine moments, such as when Georgina sees some wounded soldiers and realizes her playgirl life has to stop, and some extremely funny ones, as in the episode when the Bellamy's drawingroom is commandeered for a dreary charity event.  With this series the writers and artists reached their height!