In 1940, upon his father's death, Hamilton succeeded to the Dukedom and was exerting all his efforts into the Air war, the aerial defence of his sector of Southern Scotland and Northern England.
Hamilton succeeded to the Dukedom. This was in 1940. This was upon his father's death. Hamilton was exerting all his efforts into the Air war. This was in 1940. This was upon his father's death. The Air war was the aerial defence of his sector of Southern Scotland. The Air war was the aerial defence of his sector of Northern England.