Johnson was a student (1931-43) and Scout and, subsequently, a Scoutmaster of Trinity Grammar School at Kew in Melbourne, Victoria, Australia.
He became an official of The Boy Scouts Association Victorian Branch, as a leader trainer, commissioner and, from 1976-79, its Victorian Chief Commissioner.
He became The Scout Association of Australia's national executive committee chairman.
He was a member, then chairman of the World Organization of the Scout Movement (WOSM) committee.
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