 Nyorai kupfuurira kweiyi ndima - Akaberekerwa mumusha weAdelaide weMedindie, South Australia, Derrick akasiya chikoro pazera ramakore gumi namana ndokuwana basa mubhawa. Sezvo kuDzvinyirira Kukuru kwakaipisisa akarasikirwa nebasa rake ndokutamira kuBerri, achishanda papurazi rezvibereko asati aroora muna 1939. Muna July 1941, Derrick akanyoresa muChipiri cheAustralia Imperial Force, achibatanidza 248th Battalion. Akatumirwa kuMiddle East, uko akapinda mukukombwa kweTobruk, akakurudzirwa kuti apiwe menduru yechiuto uye akasimudzirwa kuva mukuru mukuru. Gare gare, paEl Alamein, Derrick akapiwa menduru yokuzvibata kwakatanhamara nokuda kwokuparadza zvigadziko zvitatu zvengoro dzechiGermany, kuparadza matangi maviri, uye kubata vasungwa zana. 