Dorehill's return to 44 Squadron coincided with Harris' Battle of Berlin. The "Big City", as Berlin was called by bomber crews, was a distant target. To reach it under the cover of darkness required the longer nights of winter. The campaign was commenced in November. Over the next three months Dorehill attacked some of the most heavily defended targets in Germany. He piloted seven trips to Berlin. On his way to Berlin in mid-April his aircraft was attacked by a German night fighter. The hydraulic system was knocked out. The aircraft suffered a large hole in its starboard wing, and there was damage to the rear of the fuselage. Nevertheless, Dorehill continued on to the target and delivered his bomb load. On his return to base Dorehill was forced to make a crash-landing. All his crew survived. Dorehill received a bar to his DFC for the raid, with the citation noting that his handling of the damaged aircraft had been "masterly". On 9 April Dorehill flew his 60th and final operation, a raid on Danzig. In September 1944, some four months after completing his second tour, Dorehill was awarded the DSO.