the wing did bomb airfields and Polish Army troop concentrations along the Vistula river. Bombing operations continued and were extended to Galicia until 21 September. I. Gruppe struck at targets in and around Łódź, Radom, Kielce, Częstochowa, Krosno and Moderowka. Luftflotte 4 flew only a small number of missions because of the fog. Half were directed at airfields: I./KG 76 were a part of the operations. Neighbouring Kampfgeschwader 4 flew 150 sorties and dropped 200 tonnes of bombs on airfields around Krakow. On 4 September KG 76 embarked upon railway interdiction operations. The purpose of these attacks was to cause congestion at Polish railheads. The Polish land forces using roads were simultaneously attacking road traffic at an altitude of 2,000 metres (6,500 feet) and above followed by 10 to 30 degree diving attacks. The bombing raids prevented the Łódź Army from detraining. 76 received support from KG 55 and KG 77. The dive-bombing was carried out by Junkers Ju 87 Stukas. The operational-level attacks were effective and from 5 September the shortage of new targets led to a focus on close air support. In mid-September, from the 14th, KG 76 supported the German 14th Army. 76 resumed rail interdiction missions to cut off Polish lines running into Romania and eastern Poland. 76 flew low-level sorties against rail bridges and choke points. On 16 September KG 76 was formally assigned to Hugo Sperrle's Luftflotte 3. On the night of the 16/17 September the attacks were ordered to stop. Luftflotte 4 received a teletype message alerting them to a secret clause in the Nazi-Soviet Pact which allowed for the Soviet invasion of Poland. III./KG 76 remained active in the war on Poland until 22 September. The German-Soviet campaign in Poland ended on 6 October 1939. 76 spent the winter and the following spring resting, training and re-equipping. Stab./KG 76 moved to Nidda southeast of Giessen in February 1940. II./KG 76 moved from Breslau to Wiener Neustadt on 22 September then to Leipheim in Bavaria where it was ordered to stand-by in case of an emergency and end of the Phoney War. In mid-October it relocated to Crailsheim until December. From January to April 1940 it was stationed at Merzhausen, Nordhausen and Langensalza. II./KG 76 moved to Nidda with Stab./KG 76. III. Gruppe were more active. After a brief period at Wels, it went to Baltringen southwest of Ulm in the first half