Pedzisa mutsara unotevera: Shelton akagadzwa muuto semukuru mu9th (East Norfolk) Regiment of Foot musi wa 21 November 1805. Makore maviri gare gare akava lieutenant. Muna 1808 akaona chiito muhondo dze
Roliça, Vimiero uye Corunna muPortugal. Rwizi rwacho rwakadzoswa kuBritain. Shelton akatora chikamu mukutambudzika kweWalcheren expedition ya 1809 asati adzokera kuIberian Peninsula muna 1812-13. Mumakore iwayo akapinda muhondo dzeBadajoz, Burgos, Salamanca neVittoria asati akuvara zvakaipisisa pakukombwa kweSan Sebastián, achirasikirwa neruoko rwake rwerudyi. Kwakataurwa kuti akamira asina chaanoita kunze kwetende rake apo chiremba akagura gumbo racho.