By 31 March, Hube was advancing steadily westward and pushing back Lelyushenko’s over-extended 4 TA (part of which was still encircled at Kamenets-Podol’skiy). Recognizing that Hube was escaping westward and not southward as expected, Zhukov ordered Katukov to bring part of 1 TA back north of the Dnestr to assist 4 TA. Nevertheless, Zhukov did not move any significant infantry forces into this area to strengthen the defence, which enabled Hube’s desperate forces to continue pushing westward. By 4 April, Hube’s army was approaching the Strypa River at Buchach. Meanwhile, Model was assembling the relief force near Berezhany, 60km away, consisting of Hausser’s II. SS-Panzerkorps (9.SS-Panzer-Division Hohenstaufen and 10.SS Panzer-Division Frundsberg), schwere Panzerjäger-Abteilung 653 (with 28 rebuilt Ferdinands) and two infantry divisions. Hausser’s two SS-Panzer-Divisionen had been training in France, but they were not fully equipped as Panzer-Division. Instead, each only had two companies Pz IVs and two batteries of StuG-IIIs, a total of 98 medium tanks and 88 assault guns. Nevertheless, by 6 April Hausser was attacking eastward toward Buchach to meet Hube.
In the end, the skill and desperation of Hube’s troops to escape and Zhukov’s failure to bolt the door decided the battle in the German favour. With the 6. and 7.Panzer-Divisionen in the lead, Korpsgruppe Breith fought its way through the Soviet cordon. Belatedly, Zhukov tried to shift six rifle divisions and the 2 GTC into Hube’s path, but 17.Panzer-Division fended them off long enough for the rest of the army to reach the Strypa River. On 8 April, the 6.Panzer-Division and two Tigers from the s.Pz.Abt.509 fought their way into Buchach and shortly thereafter, linked up with elements of II.SS-Panzerkorps. It took almost a week for all of Hube’s exhausted army to cross the Strypa River, but then it was able to form a new continuous front with PzAOK 4. In terms of equipment, PzAOK 1 was in extremely poor shape with barely two dozen tanks left (one Tiger), a few assault guns and seven Nashorns. The escape of Hube’s PzAOK 1 from encirclement at Kamenets-Podol’skiy was one of the great operational achievements of the Second World War, since it prevented the complete collapse of the German southern flank, at least for the time being. While Winston Churchill – speaking of Dunkirk – was correct that retreats do not equal victories, the successful breakout of Hube’s army was nevertheless a huge morale boost for the Wehrmacht.
There were two important tactical postscripts to the Korsun Pocket and Hube’s Pocket, both of which reflected the growing importance of German armour being used to rescue trapped garrisons. In the first case, the survivors of Gille’s Wiking division’s breakout from Korsun were sent to the Cholm-Kovel region in eastern Poland to regroup. Barely a month after arriving in Poland, a new Soviet offensive by the 2nd Byelorussian Front’s 47th Army encircled the city on 15 March, trapping over 4,000 troops. Although Wiking’s troops were outside the pocket, they had negligible combat capability. Nevertheless, a relief effort was hastily organized. The II./SS-Panzer-Regiment 5 had just arrived at Cholm after re-equipping with Panther tanks, but only one company was combat-ready and it was committed to lead the relief effort. By 21 March, Soviet Sherman tanks fought their way into Kovel and the city could fall at any time. On 27 March, a scratch relief force was assembled at Lukov, west of Kovel, consisting of an SS Kampfgruppe (17 Panthers and III./SS-Panzer-Grenadier-Regiment Germania) and a Heer Kampfgruppe (7 StuG IIIs and Grenadier-Regiment 343). The direct route to Kovel led through a frozen marsh crossed by a railroad track, which was blocked by the 60th Rifle Division, a battery of anti-tank guns and mines. The Waffen-SS opted for the direct approach and attacked at midday on 28 March, during a blizzard. No artillery support was available due to communication problems – one of the most common forms of friction in war.{24} Soviet 76.2mm anti-tank guns were sited at a right angle to the road and managed to destroy three Panthers with flank shots into their thinner side armour. When the Panthers tried to manoeuvre off road, 10 of the remaining 14 became bogged down in the soft terrain, which halted the relief effort. Recovering 10 Panthers from bog-like terrain with only a single Bergepanther consumed more than a day and the Heer troops were not sanguine about trying to push further with such a small force. Nor did the column have any pioniers to clear mines along the road. Nonplussed, the SS Panzer-Kompanie commander opted to go on alone and with a column of just nine Panthers he boldly advanced through the Soviet lines on the night of 29–30 March, losing two to mines, but then reached the city. However, this effort failed to lift the siege and only added a handful of tanks to the trapped garrison.{25}
On 2 April, the rest of the II.SS-Pz.-Rgt.5 began arriving by rail with 59 more Panthers and a larger relief effort was assembled, including Kampfgruppen from 4. and 5.Panzer-Divisionen. On 4 April, the second relief attempt began and the Soviets desperately tried to stop it. Untersturmführer Renz, leader of the reconnaissance platoon from the II./SS-Pz.Abt.5, described the final lunge toward Koveclass="underline"
During our next forward move, we took a hit, which, luckily, only rattled our Panzer. My gunner reacted with lightning speed. I directed him, patting his shoulder with my right hand, exactly to the target. With ‘Explosive shell – 800 metres – cluster of buildings, Pak position in front – fire!’ we began the firefight. Our first shot was dead-on. A huge cloud of dust, mixed with fragments of trees and building material, rose into the sky. Being the point Panzer, I directed the fire of the whole 6.Kompanie by radio. Grossrock followed my gunner with the fire from his five Panthers, and within a few minutes we managed to stop the fire from the Paks and the tanks. Afterwards it was determined that we had destroyed several tanks, approximately ten Paks, and numerous heavy and light machine guns.{26}
After blasting their way through the cordon of tanks and anti-tank guns, the Wiking’s Panthers reached Kovel on 5 April. However, only a tenuous line of communication existed to Kovel and since Hitler would not countenance evacuating the city, Wiking’s limited forces were committed to widening the corridor for the next three weeks. The Wiking Panthers gradually pushed the Soviet infantry back from the western side of the city, but mines and anti-tank guns wore down the SS-Panzer-Regiment 5’s strength.{27} Yet Hitler was pleased, since Kovel was held for another four months. As with Korsun, even when a relief effort was successful, the cost in armour was often much higher than the benefits gained.
The other major relief effort during this period was Model’s attempted relief of Gruppe Neinhoff in Tarnopol. Model knew that it was important for front-line morale not to write-off trapped garrisons and once Hube’s PzAOK 1 was re-integrated into the front he managed to assemble a fairly large relief force by 10 April and selected Hermann Balck’s XXXXVIII Panzerkorps to command the operation. The main assault element was SS-Gruppenführer Wilhelm Bittrich’s 9. SS-Panzer-Division Hohenstaufen, which contributed a battalion of Pz IVs (II./SS-Pz.Rgt.9), a battalion of StuG-IIIs, a reconnaissance battalion, a battalion of Panzergrenadiers in SPWs (III.SS-Pz.Gr.Rgt.19), five other infantry battalions and a self-propelled artillery battalion (6x Hummel and 12x Wespe). Significantly, two-thirds of Hohenstaufen’s infantry were on foot, lacking motor transport. In addition, the 8.Panzer-Division contributed Kampfgruppe Friebe (I./Pz.Rgt.10) with 21 Panthers, the 8.Panzer-Division provided its SPW battalion (I./Pz.Gr.Rgt.79), s.Pz.Abt.507 added 12 Tigers and s.Pz.Jg.Abt.653 contributed 28 Ferdinands. Altogether, the relief force had 64 tanks, 27 assault guns and 2,000 infantrymen, although it was short of pionier support. Balck kicked off his attack on 11 April from a bridgehead over the Strypa River, but soon ran into stiff resistance from the Soviet 60th Army, which had deployed numerous anti-tank guns and mines along the route. Heavy spring rains turned the soil into mud so deep that German tanks ‘bellied out’ with their hulls, greatly reducing mobility. The 52nd Guards Tank Brigade from the 6 GTC (3 GTA) counter-attacked the German column with some of the new T-34/85 tanks, which was an unpleasant surprise for Hohenstaufen’s Pz IVs. Even two Ferdinands were destroyed with flank shots.{28} In six days of heavy combat, Balck’s relief force advanced halfway toward Tarnopol, but lost 13 Pz IVs, two Tigers and 21 StuG-IIIs. The Germans claimed to have knocked out 74 Soviet tanks and 21 anti-tank guns.{29} In an impressive display of front-line leadership, Model personally came forward to evaluate the operation’s progress, riding in a Sd.Kfz.251 command track. Nevertheless, it was clear by 15 April that the relief effort had bogged down short of its objective and the Soviets were rapidly reinforcing this sector with more armour. Model finally decided to abort the relief operation 8km short of Tarnopol and he ordered Gruppe Neinhoff to attempt a breakout operation before the town was overrun. Before dawn on 16 April, about 1,300 survivors of the garrison attempted to infiltrate through the Soviet cordon but only 55 reached the positions held by Balck’s XXXXVIII Panzerkorps. Neinhoff was killed in the breakout, as were most of his troops.