 In September 1939, Czajkowski, along with four other Polish sailors, was captured by the Soviet army and sent for interrogation to the city of Kobryn.He was fortunate to avoid execution as the commissar in Kobryn was not interested in Czajkowski and sent him home.Czajkowski then made his way back to the Soviet controlled Lwów and, while waiting to be allowed to cross the Romanian border to rejoin the Polish forces in France, continued his fencing training.