No. 5 Operational Training Unit RAAF
... that racing driver Jack Brabham and actor Bud Tingwell served with No. 5 Operational Training Unit RAAF as an engine mechanic and a flying instructor, respectively?
... that racing driver <a href="./Jack_Brabham" id="mwDtA" rel="mw:WikiLink" title="Jack Brabham">Jack Brabham</a> and actor <a href="./Bud_Tingwell" id="mwDtE" rel="mw:WikiLink" title="Bud Tingwell">Bud Tingwell</a> served with <b id="mwDtI"><a href="./No._5_Operational_Training_Unit_RAAF" id="mwDtM" rel="mw:WikiLink" title="No. 5 Operational Training Unit RAAF">No. 5 Operational Training Unit RAAF</a></b> as an engine mechanic and a flying instructor, respectively?