Looking up Gimblett's name in the Canadian Quarterly Militia Lists during the Great War shows that he had 17 years and 80 days in the ranks and was a Warrant Officer for 7 years and 114 days before being commissioned a Lieutenant (DO) in the RCA on August 15, 1912. His station prior to entering the CEF was in Kingston.
His entry has an (R) and an (E) after his name. The (R) indicates a 'Reward for Distinguished or Meritorious Services' and the (E) is for 'Seconded with Expeditionary Force.' There are no other decorations listed with his entry.
His CEF appointment papers indicate that he entered as an honorary Captain on January 25, 1915. He wrote that he had 27 years service with the PF RCA at the time. His papers were signed by Lt. Col. Panet, CO of the RCHA.
As an aside, he had tattoos on both his forearms. On the right were hands across the sea and crossed swords with a gun. On the left three figures. It does not indicate what the figures were.
https://www.bac-lac.gc.ca/eng/discov...dNumber=419665
Interestingly there were two William Henry Gimblett's in the CEF. The other was an enlisted man.
His Militia List entry does not show a middle name, but his CEF papers do.
HTH.
Cheers,
Dan.