Lieutenant Colonel John A. Hall
30th (Victoria Fusiliers) Battalion 
He retired to British Columbia after the war and worked in his private laboratory, but several times ”threatened,” in his impulsive and outspoken way, to come back to England and help to “clear up the mess.”
(Journal of the Chemical Society, 1932, 2993)
John Albert Hall was born in Manchester England on 24 August 1868. After studying chemistry at Owen’s College, he worked for the Clayton Aniline Company, a manufacturer of dyestuffs. In 1893, Hall and two colleagues established a chemical and acid factory in Victoria, British Columbia, which later merged with Canadian Explosives Ltd. In 1899, Hall joined the 5th Regiment, becoming the commanding officer in 1903. Major Arthur W. Currie succeeded him in 1909.
World War Graphic History 