Posedin formed part of the main defensive zone which was as much as 7km deep in this area. The position consisted of two continuous trenches and individual buildings had been turned into permanent firing points connected to deep cellars for cover. Barbed wire was present both in continuous strands and as Bruno coils, along with minefields, individual foxholes and machine gun posts. All this was defended by a battalion of the 1234th Regiment of the "Kurmark" Panzergrenadier Division, reinforced with 10-12 guns and a machine gun company. In support the regiment had two artillery battalions and 2-3 mortar batteries. The battalion had close to 200 infantrymen, about 30 of whom were armed with sub-machine guns and another 30 carrying "Panzerfausts". The 66th Guards Regiment commander ordered his 2nd Battalion to take the Posedon position that day and then get astride the road junction to its southwest. The Battalion commander, Maj. Semyon Ivanovich Nikin, decided to outflank Posedon with his 5th Company from the north and 4th Company from the south to get into its rear, while the 6th Company waited to exploit any developments. Each company had about 80 riflemen. The attack was supported by the 49th Guards Artillery Regiment's 1st Battalion, a battery of regimental artillery, a company of 120mm mortars, and a battery from the antitank artillery regiment. This artillery provided a preparation which suppressed most of the German weapons before the Battalion's attack. However, Nikin noticed that this fire seemed to have completely suppressed the enemy fire from the trenches north and south of Posedon and he modified his plans accordingly. As early as 1100 hours the 5th Company, with two 45mm antitank guns, had outflanked the position and captured the junction. An hour later the 4th Company accomplished the same to the south and Posedon was encircled, leading to disorder among the defenders as some attempted to hurriedly withdraw to Wuschewire. Meanwhile, 33rd Division was meeting stiff resistance at Letschin, so Nikin ordered his 5th Company to get in the rear of that position and disrupt its defense. He also directed his 6th Company to make a frontal attack on Wuschewire just past noon. At the same time the 5th Company got within 2km of Letschin from the west and destroyed several German guns and machine gun crews that had been supporting the garrison there. By 1300 hours the 33rd Division took the strongpoint.