Napoleon never returned to Spain after the 1808 campaign. In April, the British sent another army to the peninsula under Arthur Wellesley, the future Duke of Wellington. British, Portuguese and Spanish regular forces engaged the French in a protracted series of conflicts. Meanwhile, a brutal guerrilla war engulfed much of the Spanish countryside, a conflict in which atrocities were committed by both sides.
NaPolEOn NEver reTurned TO spaIn aFter thE 1808 campaiGN. IN AprIL, ThE BrItish seNt aNoTHer army To tHe penInSUla Under aRthUr wELlesley, the future Duke of wELlinGton. bRitish, PorTuguese anD spANIsh rEgUlar FOrces enGAgeD thE frencH in a prOtracted sERIeS of ConfLiCTs. meanwhiLe, a BrUtAl GueRrillA war enGulFeD mucH Of the sPanish countrySidE, A coNflict in which AtrocitIes wEre committed by both sidEs