Innsbruck, an Austrian city, was annexed by Nazi Germany in 1938. It was bombed 22 times by the Allies in World War II, suffering heavy damage.
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Background
The widespread area bombing of Innsbruck began in December 1943 and went on until April 1945. Innsbruck is a main transport hub where four rail lines (Arlbergbahn from the west, Mittenwaldbahn from the north, Westbahn from the east and Brennerbahn from the south), converge. A key function as a railroad supply center for Italy made Innsbruck an important strategic target for the Allies.
Until autumn 1943, Innsbruck was too far away for the Allied air forces. With the establishment of the Fifteenth Air Force (15th AF) in November 1943, the success of "Operation Husky", (the name for the Allied invasion of Sicily) and the subsequent construction of several bases near Foggia in Italy, the city was then in range.
Table – the 22 attacks
The first two raids, on December 15 and 19, 1943, happened unexpectedly: the residents of Innsbruck did not use the air-raid shelters therefore there was a high death toll (259 + 65 people killed). During the next six months attacks were suspended by the Allies because of preparations for Operation Overlord in Normandy, in France. In this break the military and urban administration of Innsbruck rearranged the anti-aircraft defenses and expanded the air raid shelters. These shelters were mainly constructed by forced labor from the Arbeitslager Reichenau in Innsbruck. 25 underground shelters with a total length of 11,2 km and space for 28,755 civilians were built in 1944.
The third attack on June 13, 1944, concentrated on the marshalling yards in Innsbruck. 37 aircraft of the 484th Bomber Group/5th Wing of the 15th Air Force were originally destined for targets in Bavaria, (Oberpfaffenhofen near Starnberg, Allach near Munich, Milbershofen near Dachau and Neuaubing near Munich). Due to bad weather conditions and strong air defenses over Munich, Innsbruck was the alternate target. The narrative report of Mission 31 states:
"Maybe men had been wounded, but remained heroically at the assigned posts. Approaching the target, for the second time on this mission the formation encountered heavy, intense and accurate anti-aircraft fire. In the face [of] repeated bursts of murderous enemy gun-fire, the group leader kept his remaining force intact and led the formation on a perfect bombing run for a brilliant peace of precision bombing."The bomber group, with about 350 crew members, suffered heavy losses: four killed, four wounded and 54 missing. 56 tons of bombs killed two civilians, and destroyed the marshalling yards and the Wilten monastery. The bomber crews received a "Presidential Unit Citation".
The 13th attack on Innsbruck on December 16, 1944, indicated a change in the strategic approach: a higher percentage of delayed-action and incendiary bombs (600 high explosive and 45 delayed-action bombs and 12,000 incendiaries). Innsbruck was no longer treated as a strategic target. The high number of civil buildings destroyed and the high death toll (40 persons killed) indicates "morale bombing".
The 21st attack on April 10, 1945, was the only night operation. This raid was carried out not by the USAAF but by No. 205 Group RAF. 31 people were killed.
The war ended in Innsbruck on May 3, 1945, when the resistance movement liberated the district and units of the US 103rd Infantry Division entered the city. From December 1943 to April 1945, 60 percent of the buildings in Innsbruck were damaged and 461 people were killed.
Besides the marshalling yards, many historic monuments were destroyed, including: the Servitenkloster monastery (1614–1616) and the Bartholomäuskapelle, one of the oldest buildings in Innsbruck (13th century). The Landhaus or old federal state parliament of 1724, city hall, St. James's Cathedral (1717–1724), Stift Wilten monastery (1651–1667), the Jesuit Church (1627–1637) and several buildings in the historic center were badly damaged.