 Hunter graduated with first-class honours in 1920.From 1917 to 1920, Hunter was a medical tutor at Wesley College, University of Sydney, and, from 1918 to 1920, he was a demonstrator in anatomy.Hunter had enlisted for active service in 1917 and actually went into camp, but his remarkable merits had been recognised both by his fellow students and his teachers, and steps were taken which resulted in his being officially ordered to return to his studies.