William Cameron was a Commission Agent from Rushworth, Victoria who enlisted with the Australian Imperial Force (AIF) on 23 September 1914. Cameron had some previous military experience, having spent four and a half years with the Light Horse prior to the war, and entered the AIF as a farrier sergeant. His younger brother, Hugh James Cameron, also served in the AIF with the 8th Light Horse Regiment.

He joined the 9th Light Horse Regiment and departed Melbourne aboard HMAT Karroo on 11 February 1915. Cameron arrived with his regiment at Gallipoli in May and remained in reserve until August when he was part of the successful attack on Hill 60, and also receiving a promotion to temporary second lieutenant. Unfortunately, on 4 September 1915, Cameron was killed in action in the area around Rhododendron Spur. William Cameron is buried at the 7th Field Ambulance Cemetery, Gallipoli, Turkey.