Mezue ahịrịokwu na-esonụ: A mụrụ ya na 17 Machị 1787 nye Charles na Ann Fergusson, a họpụtara Fergusson dị ka ensign na 1801, na 18th (Royal Irish) Regiment of Foot, tupu ebufe ya na 43rd (Monmouthshire) Regiment of Foot, na-azụ ọzụzụ dị ka ndị agha dị mfe n'okpuru Sir John Moore na Shorncliffe. N'ịbụ onye e buliri n'ọkwa lieutenant n'afọ 1804, na onye isi n'afọ 1806, o jere ozi na Light Division n'oge Agha Peninsular. Fergusson nọ n'agha ndị a lụrụ na
Roliça, Vimeiro, (ebe ọ merụrụ ahụ), na Corunna, ebe ndị agha ya so na ndị nchekwa. Fergusson so ndị agha nke iri anọ na atọ na njem njem Walcheren nke 1809 tupu ọ laghachi na Peninsula, na-ahụ ihe na River Côa, Bussaco, Sabugal, Fuentes de Onoro, yana Ciudad Rodrigo na Badajoz, ebe ọ bụ akụkụ nke ndị agha nke iri anọ na atọ, na-anata ọnya ugboro abụọ. O nwetara ihe nrite ọlaedo maka ihe o mere na Badajoz. N'ịgbaso ezi ihe na Salamanca n'afọ 1812, e buliri ya n'ọkwa Major na-enweghị ịzụta, na-ewere ọkwa na 79th Foot. A gbanwere ya n'ime 85th Foot, na-ahụ ihe na Bidassoa, Nivelle, Nive na Bayonne.