 Complete the following phrase:  General Dragalina was still in command of the 6th Army Corps when Romania joined Operation Barbarossa on 22 June 1941 in order to reclaim the lost territories of Bessarabia and Bukovina, which had been annexed by the Soviet Union in June 1940. The 6th Corps was kept in reserve inside Romania and was sent to the Eastern Front only in October 1941, when it took part in the final phase of the Siege of Odessa. It then took part in the 