 Complete the following phrase:  Graham worked as an engineer at Sharp  Sons Engineers, Camelon. Prior to the First World War, he married the daughter of one of the directors of Leicester Fosse. Graham enlisted in the Royal Navy and served on , before attending a torpedo school. In 1912, he was attached to and rose to become a chief petty officer. During the First World War, Graham saw action on the Invincible at the battles of the 