A courier mail link between the Soviet and British governments , sometimes transporting VIP passengers was also maintained . Late in WWII , Mosquitos undertook a wide range of courier duties , often overflying and sometimes landing in neutral countries such as Sweden . In 1944 , a Mosquito from RAF Benson was stripped of its photographic equipment and flew to Moscow in 4 hours , acting as a courier for the Moscow Conference ( 1944 ) . As a result , Mosquito 's from RAF Benson were given the further tasks of carrying diplomatic mail for the Yalta Conference and the Potsdam Conference , both in 1945
Potsdam Conference
Potsdam Conference
De Havilland Mosquito operational history