[5] He was first stationed aboard the seaplane carrier Vindex, part of the Harwich Force, where he gained a reputation as a skilled and daring flyer,[6] and was promoted to flight lieutenant on 31 December 1916.

[7] Day chafed at the lack of activity at Harwich, and gained a transfer to the light cruiser Cassandra.

[8] Following her grounding in August 1917, he was posted to the experimental air station at RNAS Kingsnorth on the Isle of Grain.

[1] On 27 February, he was shot down in flames into the sea about 25 miles west of Dunkirk by a German seaplane.

[6] Only three of these; "On the Wings of the Morning", "An Airman's Dream" and part of "To My Brother", were published in his lifetime, the first in Cornhill, and the other two in The Spectator.