 After the war ended, Tatar betrayed the London-based Polish government-in-exile by organising an illegal handover of its vast reserves of money and gold (donated by the nation and called the Fund of National Defense), to the communist regime.The first batch of money was stolen en route by a consul in 1945, yet Tatar went on with his plan in 1947.He came back to Poland in 1949 on the promise of military leadership with LWP, only to be arrested and falsely accused of conspiracy against the party by the Stalinist secret police ("Urząd Bezpieczeństwa").