In Poland, Seel parted ways with the Russian army and joined a group of concentration camp survivors soon to be brought back to France. The Red Cross soon took over and organised a train convoy. This however did not go west but south, through Odessa and the Black Sea, in terrible sanitary conditions. Seel was still in Poland on 8 May 1945 when the Armistice was declared. In Odessa, as he was put in charge of order in the refugee camp he was in, he contracted malaria. At this time he was also advised to change his name to Celle and hide the fact that he was Alsatian by saying he was from Belfort.