Some estimates state anywhere between 600,000 and 1,400,000 Soviets (Russians and non-Russians) joined the Wehrmacht forces as Hiwis. (or Hilfswillige)[4] The Ukrainian collaborationist forces were composed of an estimated number of 180,000 volunteers serving with units scattered all over Europe.[5] Russian émigrés and defectors from the Soviet Union formed the Russian Liberation Army or fought as Hilfswillige within German units of the Wehrmacht primarily on the Eastern Front.[6] Non-Russians from the Soviet Union formed the Ostlegionen (literally "Eastern Legions").