The third group of Polish prisoners were members of Polish resistance organizations ("Armia Krajowa", or 'cursed soldiers') loyal to the Polish government-in-exile and seen by the Soviets as a threat to their establishment of a power base in Poland. Relatively few were sent to the Soviet Union (although there were notable exceptions, see Trial of the Sixteen); most were transferred to the Polish communist security forces and prisons, or enlisted in the Berling Army.