Rubuta ci gaba don wannan sakin layi - A farkon yakin duniya na farko, de Wet ya koma aiki; an ambaci shi a cikin sakonni kuma an ba shi lambar yabo ta CBE don ayyukan da ya dace a matsayin Jami'in Harkokin Kasuwanci na Naval a Vancouver. Ci gaba da aiki, daga baya ya kasance Babban Jami'in Jirgin Ruwa na Jirgin Ruwa a lokacin kwashewar Constantinople
a shekarar 1923, Babban Jami'in Sufurin Jiragen Ruwa a Arewacin China a shekarar 1927 kuma Jami'in da ke Kula da Sufurin Jiragen Ruwa a Masar tsakanin 1924 zuwa 1926 kuma kuma tsakanin 1928 zuwa 1933.