Macmillan was also the minister advising General Keightley of V Corps, the senior Allied commander in Austria responsible for Operation Keelhaul, which included the forced repatriation of up to 70,000 prisoners of war to the Soviet Union and Josip Broz Tito's Yugoslavia in 1945. The deportations and Macmillan's involvement later became a source of controversy because of the harsh treatment meted out to Nazi collaborators and anti-partisans by the receiving countries, and because in the confusion V Corps went beyond the terms agreed at Yalta and Allied Forces Headquarters directives by repatriating 4000 White Russian troops and 11,000 civilian family members, who could not properly be regarded as Soviet citizens.