Born in Ballarat and a labourer by trade, John Joseph Armstrong was 26 years and married when enlisted on the 22nd of February 1917 in the 22nd Battalion, 19th Reinforcement, Australian Imperial Force, with the rank of Private, Number 6935. The Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on the 11th of May 1917. On the 10th of August 1918 was wounded in action by gunshot wounds. Private wounded in action in France on the 8th of August 1918 and admitted to the 13th Field Ambulance wounded. Admitted L of C Hospital wounded on the 9th of August 1918. Discharged to Base Depot ex wounded on the 7th of September 1918. On the 26th of November 1918 transferred to Employment Coy from the 4th MG Battalion. Embarked for return to Australia per H.M.A.T. 'Nevasa' on the 5th of March 1919. Disembarked on the 25th of April 1919. Discharged from the 3rd Military District on the 25th of May 1919. Tree No.3806