Those units of the division that had crossed the river attacked Stary Gorod, but were unable to break through due to poorly cleared minefields and strong resistance. To the south of the 6th Panzer Division, the 19th Panzer Division crossed the river but was delayed by mines, moving forward by the end of the day. Luftwaffe bombed the bridgehead in a friendly fire incident, wounding 6th Panzer Division commander Walther von Hünersdorff and Hermann von Oppeln-Bronikowski of the 19th Panzer Division. Further south, infantry and tanks of 7th Panzer Division crossed the river. A new bridge had to be built specifically for the Tigers, causing further delays. Despite a poor start, the 7th Panzer Division eventually broke into the first belt of the Soviet defence and pushed on between Razumnoe and Krutoi Log, advancing , the furthest Kempf got during the day. Operating to the south of 7th Panzer Division, were the 106th Infantry Division and the 320th Infantry Division of Corps Raus. The two formations attacked across a front without armour support. The advance began well, with the crossing of the river and a swift advance against the 72nd Guards Rifle Division. Corps Raus took the village of Maslovo Pristani, penetrating the first Red Army defence line. A Soviet counter-attack supported by about 40 tanks was beaten off, with the assistance from artillery and flak batteries. After having suffered 2,000 casualties since the morning and still facing considerable resistance from the Soviet forces, the corps dug in for the night. Delaying the progress of Kempf allowed Red Army forces time to prepare their second belt of defence to meet the German attack on 6 July. The 7th Guards Army, which had absorbed the attack of III Panzer Corps and Corps "Raus", was reinforced with two rifle divisions from the reserve. The 15th Guards Rifle Division was moved up to the second belt of defence, in the path of the III Panzer Corps. Development of the battle By the evening of 6 July, the Voronezh Front had committed all of its reserves, except for three rifle divisions under the 69th Army; yet it could not decisively contain the 4th Panzer Army. The XLVIII Panzer Corps along the Oboyan axis, where the third defensive belt was mostly unoccupied, now had only the Red Army second defensive belt blocking it from breakthrough into the unfortified Soviet rear. This forced the Stavka to