 Rambai muchinyora ndima ino - Hepburn akabatana ne3rd Foot Guards yeBritish Army semushandi musi wa17 Zvita 1794 uye akasimudzirwa kuva lieutenant uye kaputeni musi wa28 Chivabvu 1798. Akaona basa muIrish Rebellion ya1798 uye gore rakatevera racho akaenda kuHelder muHolland. Akakwidziridzwa kuva kaputeni uye lieutenant-colonel musi wa 23 Chikunguru 1807, muhondo ya1811 yeBarrosa akakuvara zvakaipisisa mugumbo nebhora remusket asi akaramba kubviswa nhengo achiziva kuti zvaizopfupisa basa rake remauto. Kunyange zvakadaro, akamanikidzwa kudzokera kumusha nemhaka yekukuvara uye haana kusvika zvakare muIberian Peninsula kusvikira mumatsutso a1812 paakatora mutoro weboka duku revarwi vanopinza. Akaonazve chiito muhondo dzeVittoria, Nivelle neNivemunguva yeHondo yePeninsular, iyo akagamuchira menduru yegoridhe yeuto uye chibatiso chimwe. 