Footage of Hal Swain and Swing Sister playing 'Smile When You Say Goodbye'.
Note: Probably filmed in the Pathe Studio.
Various shots of the Swing Sisters playing accordion in accompaniment to the musician Hal Swain on the saxophone, they play 'Smile When you say Goodbye' - shot in studio. Hal Swain sings the song. Various good shots of troops leaving by train and ship and saying goodbye to their relatives (Library shots).
Note: alternative for search purposes - Harold Swain.