Kammala jumla mai zuwa: Daga baya Davidson ya ga aiki a Afirka ta Kudu a cikin Yaƙin Anglo-Zulu na 1879, lokacin da aka raunata shi a yakin karshe na yaƙin a Ulundi. An daukaka shi zuwa kyaftin a watan Janairun 1880, kuma a wannan shekarar ya yi yaƙi a kashi na biyu na Yaƙin Anglo-Afghan na biyu. An nada Lord Napier Gwamnan Gibraltar a 1876, tare da Davidson ya sake zama "mai taimaka masa" daga Disamba 1881 zuwa Disamba 1882. Bayan wannan ya koma aiki a Indiya ta Burtaniya, inda aka daukaka shi zuwa Manjo kuma aka tura shi zuwa Sashen Ordnance na Indiya. Ƙarin ci gaba a cikin Royal Horse Artillery ya biyo baya a watan Janairun 1896, lokacin da aka ba shi mukamin Laftanar Kanar, kuma Kanar a watan Janairun 1900. Wannan ya yi daidai da nadin sa ga ma'aikatan Royal Artillery a Afirka ta Kudu a lokacin Yaƙin Boer na Biyu. Ya umurci Royal Horse Artillery a kan tafiyarsu don sauƙaƙe Kimberley, kuma ya kasance a wasu wasu alkawurra, ciki har da Yaƙe-yaƙe na
Paardeberg, Poplar Grove, da kuma Driefontein. An ambaci Davidson a cikin sakonni don ayyukan da suka dace a lokacin yakin. Ya bar mukaminsa a cikin ma'aikatan a watan Janairun 1901, kuma an sanya shi a jerin rabin albashi, amma ya koma ma'aikatan a watan Oktoba na wannan shekarar. Don hidimarsa a yaƙin, an yi masa ado da lambar yabo ta Sarauniya, tare da ƙuƙwalwa huɗu. A watan Afrilun 1901, an sanya shi Abokin Abokin Bath. Bayan yaƙin, ya koma Biritaniya inda ya kasance Kanal na Ma'aikatan da ke ba da umarnin Royal Artillery, Arewa maso Gabas, kafin ya bar mukamin kuma an sanya shi a jerin rabin albashi a watan Oktoba 1904. Shekaru uku bayan haka, a Janairu 1907, ya yi ritaya daga aikin soja.