Dietl commanded the German 3rd Mountain Division that participated in the German invasion of Norway on 9 and 10 April 1940. Most of this division was landed at Narvik by a German naval force of ten destroyers, commanded by Commodore Friedrich Bonte, subsequently all ten destroyers that had ferried Dietl's troops to Narvik were sunk in the First and Second Battles of Narvik. Dietl's mountaineers withdrew into the hills and later retook the town when Britain abandoned her efforts to evict the Germans from Norway due to German success on the Western Front (the Franco-German border, Luxembourg, Belgium and the Netherlands). Outnumbered by British, French and Polish forces, his skillful defense utilized ammunitions, food and sailors (re-drafted as infantrymen) from the sunken ships. This gained him the nickname "The hero of Narvik".