Roydon (Sep) was an original member of the unit, embarking aboard “S.S. ZEALANDIA” on 8 Dec 1941 for Timor as a Lance Corporal in No 9 Section, “C” Platoon. After the campaign on Timor, he embarked with the unit, for Australia aboard the Royal Dutch destroyer “Tjerk Hiddes” on either 11 Dec 1942 or 16 Dec 1942, as the embarkation rolls do not differentiate.
After leave and reorganization, he embarked with the unit for New Guinea aboard S.S. “DUNTROON” on 17 Jun 1943 as a Corporal in No 10 Section, Headquarters Group and returned to Australia with them aboard “TAROONA” on 3 Sept 1944. After further leave and reorganization, he embarked for New Britain aboard “TAROONA” on 9 Apr 1945 with the unit as a Corporal in "A" Troop.
He was discharged on 8 Jan 1946.