Second World War Biermann began his naval career in 1938 as a
sub-lieutenant in the
Royal Naval Volunteer Reserve. In January 1940, he was called up for full-time service and transferred to the
Seaward Defence Force. Promoted lieutenant in mid 1941 he commanded , and , before being promoted to lieutenant commander in command of the salvage vessel . The crew of the HMSAS
Gamtoos cleared several Mediterranean ports of sunken and scuttled ships, and at Marseilles, Biermann blew a hole in the harbour wall so that he could enter the
Vieux Port and begin work. The
Gamtoos went on to salvage the
Sidi Aissa, towing it away to clear the valuable graving dock at
La Ciotat by 14 December 1944. This earned Biermann appointment as an
Officer of the Order of the British Empire (OBE) (Military Division). The citation for his OBE reads:
Post-war and rise to senior command After the Second World War, and with the establishment of the
South African Navy (Permanent Force) in May 1946, Biermann was appointed lieutenant commander in the Permanent Force and made captain of the
Algerine class minesweeper, , commissioning it in
Devonport on 8 September 1947. He was also the Senior Officer of the minesweeping squadron. In 1950, Biermann was transferred to Defence Headquarters and served on the staff of the then
Director-General of the South African Naval Forces. Two years later he attended the British Naval Staff Course at the
Royal Naval College, Greenwich, and was appointed as
naval attaché at
South African House, London with the rank of commander. In 1952, Erasmus posted Brigadier
Pieter de Waal as a Military attache to the United States, replacing him with Biermann, Biermann was made vice admiral on 1 December 1965, when his position was simultaneously retitled as Chief of the Navy. In 1972, Biermann took over the position of
Commandant General of the South African Defence Force and promoted to Admiral, the first time this rank was used in the South African Navy. The title was changed to Chief of the
South African Defence Force a year later. In 1977, Biermann authored '
The South African Response. The Southern Oceans and the Security of the Free World: New Studies in Global Strategy. The navy's submarine base was named after him. == Contribution to yachting in South Africa ==