Stephen Philip Boulton was born at Clunes, Victoria in 1890 and worked as a bank official at the Commonwealth Bank of Australia before the outbreak of the First World War. He enlisted in the Australian Imperial Force on 12 January 1915 and was assigned to the 1st Divisional Ammunition Column and then to the 2nd Field Artillery Brigade. Boulton departed Sydney aboard HMAT Runic on 19 February 1915. He was stationed briefly in Egypt before being deployed to Gallipoli on 1 October 1915.

Boulton was promoted to bombardier on 15 May 1916, to corporal on 19 August 1916 and to lieutenant on 3 February 1918. On 28 January 1918 he was assigned to duty at Pigeon School followed by time at the Corps Gas School. Stephen Boulton was wounded by a gas shell in his dugout and died on 3 October 1918 and is buried at Roisel Communal Cemetery Extension, France.