Three of McGowen's sons served in the Great War; one of them was killed at
Gallipoli in 1915. McGowen remained a strong supporter of Australia's involvement in the war. The 1916 Labor conference decided to oppose
conscription. McGowen, who favoured conscription, was expelled from the party along with many other ALP parliamentarians. At the 1917 election McGowen was defeated by the official Labor candidate
William McKell (himself a future Premier), but his career did not end there. His old rival Holman, now himself an apostate from the ALP and leading a
Nationalist administration, appointed McGowen to the then unelected
Legislative Council in July 1917. McGowen died of heart disease in the Sydney suburb of
Petersham and was survived by his wife, five of their seven sons, and two daughters. == Speeches ==