 In anticipation of this general order, on 29 March 1915 authorization was published to appoint "one officer in charge of all dental surgeons, to be attached to divisional headquarters …, to be designated 'Chief Dental Surgeon' as well as an establishment of dental officers for brigades, divisions, base hospitals and field ambulances.This provided a war-time establishment for the new CADC, with a lieutenant-colonel Chief Dental Surgeon for each division.A few days later Colonel John Alexander Armstrong was promoted, named the Director of Dental Services, and assigned to Canadian Corps Headquarters in London."