 Harnack did manage to transmit messages but the operation was largely a failure.Around 13 June 1941, Schulze-Boysen prepared a report that gave the final details of the Soviet invasion including details of Hungarian airfields containing German planes.When the Soviet invasion launched on 22 June 1941, the Soviet embassy was closed and due to the radio transmitters that had become defective, intelligence from the group failed to reach the Soviet Union.