Wounded at the Battle of the Somme, he served in East Anglia for the rest of the First World War.
[2] Coade took a degree in English at Oxford University with distinction in 1921 and the next year returned to Harrow School as a junior master.
[2] In 1932, Coade became headmaster of Bryanston School, Dorset, succeeding J. G. Jeffreys, and remained in post until 1959.
An open-air Greek-style theatre was built by "pioneers" in the grounds of the school during Coade's time as headmaster during the early 1950s.
At the time of his death in 1963, Coade was living at East Knoyle, near Salisbury in Wiltshire.