formed in 1943. This division was further augmented by the 2nd Cossack Cavalry Division formed in December 1944. Both divisions participated in hostilities against Tito's partisans in Yugoslavia. In February 1945, both Cossack Divisions were transferred into the Waffen-SS and formed the XV SS Cossack Cavalry Corps. At the end of the war, the Cossack collaborators retreated to Italy and surrendered to the British army, but, under the Yalta agreement, were forcibly repatriated with the rest of the collaborators to the Soviet authorities and some executed. (see Betrayal of the Cossacks) One of the Kuban leaders, the ataman Vyacheslav Naumenko served as their principle historian after World War Two, writing the first Russian language book about the Repatriation of Cossacks in his two volume work published in 1962 and 1970 entitled Velikoe Predatelstvo (The Great Betrayal). Red Army Cossacks Despite the defections that were taking place, the majority of the Cossacks remained loyal to the Red Army. In the earliest battles, particularly the encirclement of Belostok Cossack units such as the 94th Beloglisnky, 152nd Rostovsky and 48th Belorechensky regiments fought to their death. In the opening phase of the war, during the German advance towards Moscow, Cossacks became extensively used for the raids behind enemy lines. The most famous of these took place during the Battle of Smolensk under the command of Lev Dovator, whose 3rd Cavalry Corps consisted of the 50th and 53rd Cavalry divisions from the Kuban and Terek Cossacks, which were mobilised from the Northern Caucasus. The raid, which in ten days covered 300 km and destroyed the hinterlands of the 9th German Army, before successfully breaking out. Whilst units under the command of General Pavel Belov, the 2nd Cavalry Corps made from Don, Kuban and Stavropol Cossacks spearheaded the counter-attack onto the right flank of the 6th German Army delaying its advance towards Moscow. The high professionalism that the Cossacks under Dovator and Belov (both generals would later be granted the title Hero of the Soviet Union and their units raised to a Guards (elite) status) ensured that many new units would be formed. In the end, if the Germans during the whole war only managed to form two Cossack Corps, the Red Army in 1942 already had 17. Many of the newly formed units were filled with ethnically Cossack volunteers. The Kuban Cossacks were allocated to the 10th, 12th and 13th Corps. However, the most