[1] In 1913, Showers was part of the inaugural intake into the newly established Royal Australian Naval College in Geelong, with the rank of cadet midshipman.
[2] He notably commanded Adelaide on its expedition to New Caledonia in September 1940 to install Free French governor Henri Sautot.
During this time Shropshire was "heavily employed on naval gunfire support duties for amphibious landings on the north coast of New Guinea, and also at Wakde Island and Morotai in the Netherlands East Indies".
[1] He was "responsible for all personnel matters (both permanent and reserves members), discipline, naval stores, victualling and medical services".
[1] Showers was appointed Commander of the Order of the British Empire (CBE) in the 1945 Birthday Honours, for "meritorious service, outstanding leadership and devotion to duty".