During the First World War he served in France with the Rifle Brigade, where he was wounded in combat and reached the rank of Captain. When repatriated after the war he became an executive of British Railways. In 1953 Everard moved to Bulawayo, Southern Rhodesia to become General Manager of Rhodesia Railways, which he remained for five years before retiring.
He supported the Rhodesian Front and stood in for Clifford Dupont (who had been made "Officer Administering the Government") in 1968-1969.
Following the proclamation of a Republic, Everard was Acting President on several occasions.