National Geographic : 1943 Dec
U.S.Army Air Forces, Official Flying Fortresses' Roar Shakes the Brenner Pass-Once the World Trembled when Axis Dictators Whispered Here For 2,000 years the pass has been a gate to conquest. Roman legions and barbarian hordes marched this way. Now the heavily fortified gorge presents amighty barrier to Allied armies. Even if it withstands breaching, its bridges and tunnels are vulnerable by air. Well-placed bombs have reportedly crippled Germany's railroad life line to Italy. In this picture the American bombers had just raided an aircraft plant at Regensburg. Guided now bythe Sill River, they are shuttling toNorth Africa.