Can`t find a military "Hawk" - but not to say there wasn`t one... (There was the Miles Hawk of course and the Nieuport Nighthawk)
Westland built a
Wessex Airliner in the 30's and used by the RAF as a navigation trainer
I was hoping to add Vulcan to the list, but as far as I can make out the
Vickers Vulcan (mid 20's) never saw military service .....