Finally , during and after the final stages of the war , Yugoslav authorities and Partisan troops carried out reprisals , including the deportation of the Danube Swabian population , forced Causation marches and executions of thousands of captured soldiers and civilians ( predominantly Croats associated Collaboration with the NDH , but also Slovenes and others ) fleeing Escaping their advance ( the Bleiburg repatriations ) , atrocities against the Italian population in Istria ( the Foibe massacres ) and purges against Serbs , Hungarians and Germans associated Collaboration with the fascist forces .