Operation Hindenburg (25 June – 17 July)
On 25th June, the final provisions for Operation "Hindenburg" started. The six army assault divisions, thousands of pioneers, and hundreds of tonnes of bridging equipment moved forward towards the river to take up their pre-assault positions. A massive logistical effort was also underway bringing forward enough ammunition and supplies to be able to propel the assault far beyond the river. Meanwhile, the Luftwaffe prepared a flight plan for the 1,500 JU-52 transport planes that would be needed to drop 27,000 paratroopers. It was believed that the Red Air Force had been dealt a bloody nose along the northern front and would not be able to oppose the air-landing; therefore there would be no need for an escort.
Intelligence reports, from the Abwehr, indicated that Soviet troops were moving north, but more importantly that the garrison at the intended crossing point had been weakened as a result of the "Hoffmann" and "Ludendorff" battles. It was also decided to concentrate the assault so to avoid a costly reverse. Therefore, the airborne attack zone was shifted. Rather than landing behind the frontline and assaulting the Soviet defences from the rear, the paratroopers would land on top of the main Soviet line of resistance. This change in the plan resulted in a further delay in the launching of the operation. To disrupt the Red Army strategic movements, all army groups (other than 'North') were ordered to resume their attacks.
In the early hours of the 28th, Operation "Hoffmann" II was launched. Army Group South Ukraine launched a massive attack into the northern flank of the Soviet bridgehead, over the Southern Bug, with the objective of cutting off as many Soviet troops. Troops to the south of the bridgehead were unable to support the attack, due to the heavy fighting that had carried on since the end of the original "Hoffmann" operation. However, there was enough infantry to break through the initial Soviet defence line, and a panzer reserve had been assembled to exploit and to cut through the Soviet corridor. Several hours later, Army Group North Ukraine launched six divisions forward at the extreme north of their frontline. As daylight broke across the front, Army Group Centre launched the next stage in their methodical operation to clear the marshes facing them. By the end of the day, intelligence reports were coming in indicating Soviet troops rushing south to counter these attacks. For the next four days, all these troops battled hard to achieve their objectives while at the same time sucking in Soviet forces.
During the afternoon of 3rd July, weapon crates were loaded onto the transport planes and the paratroopers made their final preparations before boarding. As dusk fell JU-52s from airfields all around Warsaw took to the air. After forming up, they made their way across the old frontier into the USSR and towards the frontline. Just before midnight, 27,000 paratroopers and several thousand weapon crates descended onto open fields picked out amongst the Soviet defences. As the planes turned north to begin their return flight west, Soviet night-fighters emerged out of the darkness. The transport formation broke up, but was unable to outpace the Red Air Force. Tracer rounds streaked through the night sky, red fireballs – fiery engines – added to the illumination, and infernos plummeted to the ground. Transport plane after plane was hit. Eventually, the attacks declined as the night-fighters turned for home after expending their ammunition and stopped once the JU-52s moved beyond the operational range of the Red Air Force. By morning, the battered formation of planes had returned to their bases around Warsaw. Excluding the numerous damaged machines – fuel tanks ruptured, engine destroyed, wings torn apart – 330 planes had not returned to base and no patrols, on the ground, had picked up survivors.
On the ground, it was a different story. Other than a few minor injuries from hard landings, the drop had been a complete success. The paratroopers had on the whole landed compact, each brigade being dropped on a designated drop-zone. The troops, having landed only with pistols, rushed to their weapon crates. Each contained Gew 41 semi-automatic rifles (along with prototype Gew 43 rifles) and modified MG 34 machine guns. The paratroopers were the best equipped force the Reich had to offer, and the only ones equipped with these rifles (although plans were in the making to ramp up the production of the Gew 43, if it proved successful, to equip the entire army). With the air battle taking place many miles away, and getting further away by the minute, the battlefield was quiet. The Red Army sent out no patrols, being use to the mass drone of aircraft moving above their positions. With the airborne troopers now fully armed, they were able to silently move towards their objectives: Red Army artillery positions, and infantry bunkers. Just after midnight, all hell broke loose as the paratroopers assaulted their objectives and the Red Army began their resistance. With these rear areas under attack, the heavy guns of the artillery would not be able to interfere with the upcoming crossing, and the main defensive line would be unable to oppose the infantry assault after it had crossed the river. At 3am, under the cover of darkness, infantry rushed to the river with assault boats and began to cross. As the first wave approached the opposite bank, the German artillery lit up the horizon as fire descended on the Red Army outpost line near the river, and other forward positions. As the first wave swept through the outpost line, pioneers started to establish pontoon bridges at various points.
As the infantry pushed forward, mopping up Red Army positions to link up with the paratroopers, in the south Army Group South Ukraine completed their initial objective. On the 5th, the panzers had cut across the length of the Soviet bridgehead linking up with the troops on the south side of the bridgehead. An estimated 50,000 soldiers had been trapped west of the Southern Bug. However, over the course of the following days the Red Army launched numerous attacks, as they had done during the original "Hoffmann" attack, to create a lifeline for their trapped comrades. Once more, there was too few infantry in the south to hold back the trapped Soviets and resist outside interference. Yet, as the Red Army concentrated its forces to break out they were rapidly losing ground in the west end of the pocket to our own attacks.
On 7th July, the first objective of Operation "Hindenburg" had been completed. The infantry had linked up with the paratroopers and secured a firm bridgehead. Sixth Army and the panzer groups immediately started to cross. By the next day, the panzer divisions were across, but the rest of Sixth Army would need a few more days. The airborne assault, attack on the rear positions and holding out alone for around 72 hours, had resulted in the loss of fewer than 1,000 paratroopers. The infantry who had launched the cross-river attack, pushed through the various Soviet defence lines and mopped up what the paratroopers had missed, had only lost 1,500 men. However, the Soviets had been routed fleeing to the flanks leaving over 5,000 bodies in trenches and bunkers along this stretch of the river. With the panzers already across the river, they started moving forward to expand the bridgehead and capture a major Soviet airfield beyond the new frontline.
In the south, the Red Army had again managed to open up a lifeline to their trapped comrades, but those troops who had been trapped had been routed during the fighting. Those who had survived the battle were retreating towards the Southern Bug in a disorganised mass as the Soviet positions west of the river were reduced. Officially three Soviet divisions – about 27,000 men – were destroyed during the fighting. However, the men of Army Group South Ukraine had adopted a no-prisoner mentality leaving the true losses as a result of this operation to be unknown.
Aware of the lessons of the 1941 campaign, such as the inability to consolidate the ground gained if an advance outpaced its flanking support i.e. the battles around Smolensk, Army Group North amended the "Hindenburg" plan. Rather than pushing as far forward and as fast as possible, Sixth Army and the panzers were now going to help cut off and destroy as much of the Soviet frontline as possible before moving further north. As the bridgehead expanded the Soviets were able to throw just enough troops in the way to mask some advances, but not enough to stop the systematic destruction of their troops in the fortifications north of the original crossing. On the 17th, the coastal attack was launched. The Kriegsmarine opened fire from the Baltic, while light bombers swooped across the battlefield. Rather than being a determined attack, this was a reconnaissance in force to probe the northern Soviet defences. With five Red Army divisions being identified facing Riga, a northern attack with the aid of bombers and the fleet was deemed to be unworkable and called off.