The March 27, 1916, Honolulu Star-Bulletin published a story that Tubb was one of four Australians who survived from a Regiment of 1128 men wiped out on the “bloody slopes of Anzac Cove in the Dardanelles campaign." He later achieved the rank of major and died of wounds suffered in battle at Polygon Wood, in the Third Battle of Ypres, on 20 September 1917. In this action Major Tubb was serving with 7th Battalion, 2nd Brigade, 1st Australian Division when he was shot by a German sniper during the Battle of the Menin Road Ridge. While being carried to the rear he was struck by British artillery shells. He died at the dressing station at Lijssenthoek and was buried at Lijssenthoek Military Cemetery, Belgium.