Rybalko kicked off Operation Star on 1 February by moving his 3TA across the Oskol River. He started the offensive with 165 tanks in his 12th and 15th Tank Corps, but used his four attached rifle divisions and General-major Sergei V. Sokolov’s 6th Guards Cavalry Corps (6GCC) on 2 February to push back the German blocking detachments, rather than committing his armour too soon. Rybalko also wisely decided to bypass the German Stützpunkt
at Kupyansk and make straight for the Donets River at Pechenegi, where he intended to cross. Kazakov’s infantry advance on Rybalko’s right flank, while the 6th Army from the Southwest Front covered his left flank. Outflanked by Rybalko’s 3TA, the German 298.Infanterie-Division was forced to abandon Kupyansk – demonstrating once again that it is best for armour to bypass enemy strongpoints rather than hit them head-on. The infantry division was forced to abandon much of its artillery in the retreat and fell back in columns toward the Donets, hounded by Rybalko’s tanks. However, Rybalko’s advance units quickly noted the presence of the Das Reich blocking units, which led him to believe that the SS-Panzerkorps could arrive in force to defend the Donets crossings at any moment. Based upon this assessment, Rybalko decided to commit both his tank corps into battle ahead of schedule on 3 February in order to accelerate the advance to the Donets. While Rybalko’s two tank corps made good progress toward the Donets, SS-Panzergrenadier-Regiment Deutschland at Velikiy Burluk put up very stiff resistance, which halted some of Rybalko’s infantry and forced him to divert a brigade from General-major Vasiliy A. Koptsov’s 15th Tank Corps to deal with his unexpected obstacle. Although the Waffen-SS troops eventually ceded the town of Velikiy Burluk, they maintained a salient that interfered with the advance of both Rybalko’s 3TA and Kazakov’s 69th Army. The Großdeutschland Division also put up very stiff resistance, which delayed Kazakov’s 69th Army for several critical days.Nevertheless, the rest of Koptsov’s 15th Tank Corps reached Pechenegi on 4 February and was shocked to find that elements of the SS-Panzergrenadier-Division Leibstandarte Adolf Hitler
(LSSAH) were already defending the heights on the far side of the Northern Donets. The LSSAH detachments were small, but included SS-Sturmbannführer Kurt Meyer’s reconnaissance battalion, some Panzerjägers and a few assault guns. The Germans emplaced a few 8.8cm Flak guns on the heights and they were able to engage Koptsov’s tanks at distances up to 6,000 meters and succeeded in setting nine tanks on fire. Afterward, Koptsov kept his tanks under cover in Balkas (ravines) and sent his infantry forward.46Rybalko’s attached infantry units made three separate attempts on 4–6 February to cross the river, which was less than 50 metres wide at this spot, but each attempt was repulsed by intense German fire. Nor were Waffen-SS junior leaders like Meyer content to fight a static defensive battle, and instead he crossed the Donets and ambushed a Soviet column, inflicting an estimated 250 casualties before returning to the German-held side of the river.47
Similarly, the Das Reich also opted for an active defence. Once the SS-Panzergrenadier-Regiment Der Führer and the I./SS-Panzer-Regiment 2 arrived at the front, they were committed to a major counter-attack into the right flank of Rybalko’s 3TA on the morning of 5 February.48 The Luftwaffe even managed to provide a few Stuka sorties to support the attack. Just after dawn, a Kampfgruppe from Der Führer and at least two companies of tanks attacked southward into the Soviet 48th Guards Rifle Division near Velikiy Burluk and caught it by surprise, advancing 10km. Rybalko was forced to detach the 179th Tank Brigade to deal with this enemy action, which distracted him from crossing the Donets. A second SS-Kampfgruppe, supported by 2./SS-Panzer-Regiment 2, pushed eastward toward the village of Olkhovatka. Rottenführer Ernst Barkmann, commanding a Pz III tank, was involved in the attack. Here, the Das Reich’s lack of recent mechanized combat experience was evident in the lack of reconnaissance prior to contact with the enemy. The overconfident SS-tankers rolled toward the town in a frontal assault, straight into a well-prepared anti-tank defence that shot them to pieces; about 13–14 tanks were knocked out. Barkmann’s Pz III was one of three that made it into the village and they encountered close-quarter combat: