President of Mongolia
After the Soviet invasion of Poland (1939), he was arrested and imprisoned in Moscow (until 1941). Among his fellow prisoners was Anandyn Amar, former Prime Minister and President of Mongolia. He was released from Soviet captivity on amnesty following the Sikorski–Mayski agreement as an officer of the Polish Army in the East by efforts of (commander-in-chief general Władysław Anders) in 1942.