In the winter of 1943, his forces advanced forward towards the Belarusian city of Vitebsk. One of the key elements to Bagramyan's success was that many of the soldiers were part of veteran units that had been trained in the Arctic regions of Siberia, enabling them to easily push through entrenched defenses the Germans had spent months preparing. Among the key locations imperative to reach Vitebsk was the small town of Gorodok, which served as a communications hub that the Germans had heavily fortified. Despite the heavy defense preparations, Bagramyan was able to utilize his heavy artillery and air support from the Red Air Force in late December to bombard the town and then launch a three-pronged attack from the ground. The German garrison was overwhelmed, and by 24 December, two infantry divisions and one tank division had surrendered. In Moscow, the news of the victory at Gorodok prompted a 124-cannon salute in honor of Bagramyan and the First Baltic Front.