 Nyorai kupfuurira kweiyi ndima - Akaberekerwa muLymington, Hampshire mwanakomana mumwechete waSamuel Colborne anobvawo kuLymington naCordelia Anne Colborne née Garstin, Colborne akadzidza paChrists Hospital muLondon uye paWinchester College. Akapiwa basa semukuru mu20th Regiment of Foot musi wa10 Chikunguru 1794 achivimbisa matanho ese anotevera mukusimudzirwa kwake regimental pasina kutenga. Akasimudzirwa kuva lieutenant musi wa4 Gunyana 1795 uye kuva kaputeni lieutenant musi wa11 Nyamavhuvhu 1799, akaona chiito paHondo yeAlkmaarmuna October 1799, apo akakuvadzwa, mukati mokupinda kweAnglo-Russian muHolland. Akakwidziridzwa kuva kaputeni pa 12 Ndira 1800, akatora chikamu muSir Ralph Abercrombys expedition kuEgypt muna Nyamavhuvhu 1801 uye akakuvadzwa zvakare. 