With AOK 18’s front broken and the Soviets rolling inexorably toward the Luga River, von Küchler’s nerve cracked and he ordered both armies to retreat to the Panther Line, even though its fortifications were incomplete. Under heavy pressure, AOK 18 conducted a fighting retreat to the Luga River, while AOK 16 fell back about 30km. The remaining Tigers of s.Pz.Abt.502 assisted the AOK 18 in its withdrawal by turning to ambush the Soviet spearheads; on 25 January they claimed 41 Soviet tanks destroyed at Voyskovitsy, 5km southwest of Gatchina. However, German supply lines were disrupted by the retreat and resupply of fuel and ammunition became problematic. On 28 January, the Tigers made a brief stand at Volosovo while the infantry retreated to the Luga River. One lone Tiger was engaged by a battalion with 27 T-34s; despite having only three AP rounds and nine HE rounds, it managed to knock out seven T-34s and then fall back. Yet aside from the few remaining assault guns, Heeresgruppe Nord had almost no other armoured units to serve as a rearguard.
Von Küchler’s retreat order was unauthorized and Hitler immediately sacked von Küchler and decided to replace him with Generaloberst Walter Model, who had already made a name for himself as a steadfast commander. However, by the time that Model arrived in Pskov on 31 January, Heeresgruppe Nord was already in full retreat and Fediuninskiy’s 2nd Shock Army was on the outskirts of Kingisepp. Even worse, Model found that AOK 18 had barely 17,000 combat troops to hold the 115km-wide front on the Luga River, which was insufficient to repulse a determined offensive. Affecting a bold front, Model declared that Heeresgruppe Nord would employ
Yet despite Model’s bravado, the Soviet steamroller kept right on coming, advancing up to 16km per day, overrunning Kingisepp on 1 February and then seizing bridgeheads over the Luga River. At Narva, Fediuninskiy’s 2nd Shock Army managed to cross the Narva River south of the fortress city, but was stopped by a fanatical defence by Gruppe Sponheimer. Other Soviet elements crossed the frozen Lake Peipus, but were quickly destroyed. Generalleutnant Erpo von Bodenhausen’s 12.Panzer-Division arrived by rail from Heeresgruppe Mitte and Model decided to use it in a