to attack the valley of Sutjeska via Piva and Vučevo. As a dominant point, it was necessary take the hill at Vučevo, to make a corridor for the free passage over Sutjeska, in the direction of Zelengora and further to Bosnia. The German command also foresaw such a possibility, so it sent an advance force to take Vučevo. In a hand-to-hand battle, the forces of the 1st Proletarian Division managed to overcome the Germans and take control of this dominant point. The Germans then began to occupy the entire valley of the Sutjeska, from Tjentište to its confluence with the Drina near Čelebić. The 7th SS Division Prince Eugene penetrated in that direction, which surrounded the majority of forces and the central hospital. In the area around the canyons of Sutjeska and Suha, fierce battles began for the surrounding heights, which alternately fell into the hands of both. An area of 5-6 km was made for the passage of the majority of forces. The wounded were supposed to go there as well. The First Proletarian Division marched through Milinklade and on June 8, 1943, broke out on Zelengora. The Second Proletarian Division was less fortunate. At the place of Bare, not far from Volujak, there was a scene of bloody battles with units of the 118th German Division. On 9 June Tito was nearly killed on Milinklade when a bomb fell near the leading group, wounding him in the arm. The popular post-war report of the event credited Tito's German shepherd dog Luks, for sacrificing his life to save Tito's. Captain William F. Stewart (a Special Operations Executive operative who was parachuted into Tito's headquarters alongside Captain William Deakin during May) was also killed by the explosion. Phase V: Partisan breakthrough toward eastern Bosnia (10 June – 15 June) Facing almost exclusively German troops, the Yugoslav National Liberation Army (YNLA) finally succeeded in breaking out across the Sutjeska river through the lines of the German 118th and 104th Jäger and 369th (Croatian) Infantry divisions in the northwestern direction, towards eastern Bosnia. Three brigades and the central hospital with over 2000 wounded were surrounded. Following Hitler's instructions, German commander in chief Generaloberst Alexander Löhr ordered their annihilation, including the wounded and the unarmed medical personnel. War crimes Of the more than 6,000 killed Partisan fighters in Sutjeska, a large number were exhausted fighters and wounded who were executed by the Germans.