Septimus Julius Augustus Denison, who because of his year of birth actually saw relatively little active military service but managed to rise to the rank of Major General in the British and Canadian armies 

Septimus Julius Augustus Denison

“George Taylor Denison is one of the more colourful members of the family. He had a long military career and was an active contributor to civic duty. He was an accomplish author on military history.””

GEORGE TAYLOR DENISON III

“Rear Admiral John Denison served in the Royal Navy from 1867 to 1909 having joined as a midshipman. He commanded the Royal Yacht HMY Victoria and Albert. His son Bertrand was an early casualty of WW I””

REAR ADMIRAL JOHN DENISON