Ramba uchiverenga ndima iyi - Johnston akatanga kupiwa basa muRoyal Horse Guards uye akanga aripo nehurumende paHondo yeDettingen
muna 1743 uye Hondo yeFontenoy muna 1745. Akava mukuru mu regiment musi wa 29 Mbudzi 1750, akasimudzirwa kuva lieutenant-colonel weRoyal Horse Guards musi wa 17 Zvita 1754 uye akatungamira regiment muGermany mune dzimwe nharo munguva yeHondo Yemakore Manomwe.