Gumbinnen Operation - The Offensive

The Offensive

On 16 October, the 5th and 11th Guards Armies went onto the offensive and initially penetrated some 11 km into the German defensive belt. The flanking armies commenced operations the next day, by which time units of the 11th Guards Army had crossed the East Prussian border.

The Soviet troops ran into extremely strong resistance, however. It took them four days to penetrate the initial tactical defences, while the second defence line was so strong that Chernyakhovsky was compelled to commit the 2nd Guards Tank Corps to break it. Casualties were extremely heavy. On 20 October, the second line was ruptured by the 11th Guards Army and 2nd Guards Tank Corps east of Gumbinnen, defended by the guns of the 18th Anti-Aircraft Division and the Fallschirm-Panzerkorps Hermann Göring, which had been redeployed in the area to counter the Soviet advance. On 21 October, the Soviets' reserve, the 28th Army, was committed, but the offensive in the north was fought to a standstill in the region of Stalluponen thanks to some effective German counter-attacks.

Gumbinnen was taken by 22 October, but retaken by German forces on the 24 October, after the Germans committed the 5th Panzer Division, and Heavy Panzer Detachment 505 (equipped with Tiger IIs). Units of 11th Guards Army found themselves cut off in the area of Großwaltersdorf, and were involved in intense fighting. In the meantime, the Germans had pressed more reserves, including the 102nd Panzer and Führer Grenadier Brigades into counter-attacks at Goldap, on the southern sector of the Soviet penetration. The town was retaken on 25 October.

The Soviet attacks continued until 27 October, as the flanking armies sought to close up to the 11th Guards Army.

There was more fighting in the operation's immediate aftermath: on 28 October, the 31st Army retook Goldap in a surprise attack; the town was again taken by the 5th Panzer Division, which was redeployed from the Gumbinnen area, on 3 November.