 Pari gbolohun ti o tẹle: Wilson ja ninu Ogun Boer Keji gẹgẹbi ọmọ-ogun ni 2nd Queensland Mounted Infantry Contingent, ti n ṣiṣẹ ni ilosiwaju si Johannesburg ati Pretoria, awọn : Ogun Diamond Hill ati awọn iṣe miiran. O gba igbimọ ni 15th Light Horse Regiment ni ọdun 1904, o ṣe ikẹkọ pẹlu awọn oludari miiran ti ọjọ iwaju ti Light Horse labẹ Lieutet Colonel Harry Chauvel. A gbe e ga si olori ni 1911, Wilson ni igbakeji-ni- aṣẹ ti Moreton Regiment lẹhin ipadabọ rẹ si Brisbane. Ibẹ ló ti bẹrẹ sí bá E. K. Tully fọwọ sowọ pọ láti dá ọkan lára àwọn iléeṣẹ amòfin tó gbajúmọ jù lọ ní Queensland sílẹ. 