Sydney enlisted on 30 Jul 1940 and was posted to 2/40th Battalion. He was promoted Acting Corporal on 30 Jun 1941 and transferred to 8th Division Postal Unit same day, confirmed Corporal on 30 Aug 1941 and embarked for Timor on 8 Dec 1941. He joined the 2/2nd from the 8th Division Postal Unit. He served in Sparrow Force Head Quarters. After the campaign on Timor, he embarked with the unit, for Australia aboard the Royal Dutch destroyer “Tjerk Hiddes” on 16 Dec 1942 as a Corporal.
He transferred to 2nd Australian Base Postal Unit on 21 Apr 1943. He was temporary detached to Allied Geographical Section 28 Aug to 8 Sept 1944 and served the remainder of the war with 2nd Australian Base Postal Unit.
He was discharged on 30 May 1945.
He was entitled to the 1939-45 Star, Pacific Star, Defence Medal, War Medal and Australian Service Medal 1939-45, pictured below.