Pari gbolohun ti o tẹle: Pakenham ti yan ensign 40th Regiment of Foot ni ọjọ 23 Keje 1803, di alaga 3 Kínní 1804, ti gbe lọ si awọn ọta ibọn 95th (lẹhin Brigade Rifle (Prince Consort's Own)) ni Oṣu Kẹrin ọdun kanna, o si gba ile-iṣẹ rẹ nibẹ ni Oṣu Kẹjọ Ọjọ 2, 1805. O ṣiṣẹ ninu irin-ajo lọ si Copenhagen ati ni Portugal, nibiti lakoko awọn
Ogun ti Roliça, o farapa diẹ ni Obidos 16-17 Oṣu Kẹjọ ọdun 1808. Ọ̀gbẹ́ni Arthur Wellesley sọ pé: "Ó jẹ́ ọ̀kan lára àwọn òṣìṣẹ́ ológun tó dáńgájíá jù lọ tí mo tíì rí".