- 3 December 1884
Mittagong, New South Wales, Australia
- 26 August 1971
Lillian Armfield was one of the first female plain-clothes detectives in Australia. She joined the New South Wales Police Force as a special constable in 1915 and retired 34 years later in 1943 as a special sergeant 1st class. During that time she helped runaway girls return home and dealt with female suspects or victims. Armfield was awarded the King's Police and Fire Service Medal for outstanding service in 1947. Four years later, after her retirement, she was awarded the Imperial Service Medal.