Following the outbreak of the Russo-German War and the signing of the Sikorski-Mayski Agreement, he was released and joined the Polish II Corps under general Władysław Anders.

In addition, Szczepanik was awarded the Italian Cross of Military Merit by the King of Italy and several other Polish and British campaign medals.

Szczepanik was the founder and chairman of the Polish Institute for Research into National Affairs (Instytut Badań Zagadnień Krajowych) in London during 1951 to 1953 and 1983 to 1986.

After Sabbat's death, his successor as the president of Poland in exile, Ryszard Kaczorowski, asked him to continue with his mission, which ended in 1990.

This is when Szczepanik's cabinet advised their last President in Exile to accept the invitation of Poland's Speaker of the Senate to transfer the Flag and other Office pre-war Insignia to Lech Wałęsa in Warsaw, as the "President of the Republic elected by Polish people in free general elections".

His ashes were buried with military honours in his home town of Suwałki following a requiem mass at St Alexander's Church.

[2] Multimedia Excerpts of Prime Minister Edward Szczepanik speaking (at the time shown) and photographs appear in episodes 4 & 5: