Sapper Frederick Ryall Dart of Moonee Ponds developed an early interest in wireless and signals. After completing four years of Senior Cadets with the 58A Cadets in Moonee Ponds, Dart joined the 21st Signal Troop, Citizens Military Force, which trained at South Melbourne. When he enlisted in 1917 aged 18 he was assigned to the Wireless Training School. The Armistice was made before he attained his 19th birthday and probable overseas embarkation. Dart continued his interest in the military after he war, and a copy of his eventual discharge certificate in 1921 can be seen here.