 The dog became the unofficial mascot of Moody's unit, the 2/1st Machine Gun Battalion, and followed them as they moved around the Middle East and Greece during their various campaigns.According to the Australian War Memorial, Horrie was described by his owner as being "intelligent and easily trained", and he was employed as an air sentry, alerting troops to approaching enemy aircraft.He was promoted to the rank of corporal, and during the evacuation of Greece, Horrie was aboard the troopship "Costa Rica" when it was sunk.