In the early summer of 1941 German mountain soldiers under the command of General Eduard Dietl set out in northern Norway up through Finland to the Russian border. Operation Silberfuchs was underway. The northernmost section of the Eastern Front would ensure Hitler supplies of nickel from Finnish mines, and bring the strategically important port city of Murmansk under German control. The roadless rocky terrain and extremes of weather created major challenges for the German troop movements. Despite this, Dietl's men made quick gains on his Russian foe, and they came closer to Murmansk. Despite...