[9] It was also in 1917 that Tylee was sent back to Canada, to command Camp Borden in Ontario before being posted to England to carry out advanced work.

[3] In June 1918 Tylee was mentioned in dispatches for valuable war service[11] and he was also made an officer of the Order of the British Empire.

In October 1920 Tyle, accompanied by Flight Lieutenant George Thompson, set out to complete the last leg of the first trans-Canadian flight (which had started in Halifax in July), departing from Calgary in a de Havilland DH-9A.

[13] In February 1921 Tylee turned his attention to the matter of what might make a suitable flag for the Canadian Air Force.

In a note he wrote to Gwatkin, Tylee proposed that the RAF Ensign be adopted with a maple leaf at the centre of the roundel.