Most soldiers of the Home Army (including those who took part in the Warsaw Uprising) were persecuted after the war; captured by the NKVD or UB political police. They were interrogated and imprisoned on various charges, such as that of fascism. Many of them were sent to Gulags, executed or disappeared. Between 1944 and 1956, all of the former members of Battalion Zośka were incarcerated in Soviet prisons. In March 1945, a staged trial of 16 leaders of the Polish Underground State held by the Soviet Union took place in Moscow – (the Trial of the Sixteen). The Government Delegate, together with most members of the Council of National Unity and the C-i-C of the Armia Krajowa, were invited by Soviet general Ivan Serov with agreement of Joseph Stalin to a conference on their eventual entry to the Soviet-backed Provisional Government.