According to records I obtained from the British Ministry of Defence, Stasiek was released from imprisonment by the Soviets on the basis of the Sikorski-Maisky (Polish-Soviet) agreement of 1941 for the purpose of joining the Polish Armed Forces, which fought under British command. He enlisted in the Free Polish Army in February 1942 and served in the Middle East (Iran, Iraq, Palestine, and Italy) from 1942 to 1944. For his service, he was awarded the Cross of Monte Cassino.
He eventually managed to make his way back to Palestine, where, he told me later, he had worked as a courier for the British during the later years of the war, carrying messages on the train from Tel Aviv to Alexandria, Egypt. He remarried in Palestine and remained in Tel Aviv. I met him once, on my first visit to Israel in 1967. He died there in 1969. This photo shows him in the uniform of the Free Polish Army (note the collar patches).