The Battle of Radzymin was one of a series of engagements between the 1st Byelorussian Front of the Red Army and the Army Group Centre of the German Army. The battle was part of the Lublin-Brest Offensive between 1 and 4 August 1944 at the conclusion of Operation Bagration the Belorussian strategic offensive operation near the town of Radzymin in the vicinity of Warsaw, part of which entailed a large tank battle at Wołomin. It was the largest tank battle on the territories of Poland during the war.[#endnote_]
The approach of the Red Army towards Warsaw served to initiate the Warsaw Uprising by the Home Army with expectation of help from the Red Army. The battle ended in a Soviet defeat and the encirclement and destruction of the Soviet 3rd Tank Corps; it is unclear to what extent this defeat contributed to the Soviet decision not to aid the Warsaw Uprising.
Before the battle.
After crossing into Poland, the Red Army's 1st Byelorussian Front of Konstantin Rokossovsky continued its advance towards Warsaw. The 65th Army (12 divisions) together with the attached 1st Guards Tank Corps, was to advance towards the town of Serock and then outflank Warsaw from the north. The 28th Army (9 divisions) together with 1st Mechanized and 9th Tank Corps was advancing directly towards Warsaw and was separated from the 47th Army by the Siedlce-Mińsk Mazowiecki line, and from the 65th Army by the Sokołów Podlaski-Węgrów-Radzymin line. Both armies, additionally supported by the 2nd and 4th Guards Cavalry Corps, were destined to take part in repelling a German tactical counter-assault at Radzymin and Wołomin near Warsaw. At the same time, the 47th Army (10 divisions) was to seize the southern approaches to Praga, seize right-bank Warsaw and cross the river through the bridges in Warsaw or through a temporary bridge in Góra Kalwaria. The 70th Army (4 divisions) was to follow the 47th and serve as a tactical reserve.
At the same time the remaining forces of the front were to support the assault on Warsaw by crossing the Vistula south of it, near Magnuszew and outflanking the city from the South and West. The 8th Guards Army (9 divisions) together with the 1st Polish Army (3 divisions) and 69th Army (9 divisions aided by the 11th Tank Corps) were to cross the river at Magnuszew.
Battle.
After the Soviet reconnaissance units reached Warsaw in late July, on 1 August 1944 the Warsaw Uprising started. Starting from an area south of Mińsk Mazowiecki, Major General Nikolai Vedeneev's 3rd Tank Corps (part of the Soviet 2nd Tank Army) thrust northwest through Okuniew and Wołomin to Radzymin, reaching an area only three miles (five kilometers) from the strategic bridge over the Narew River at Zegrze.
In response to Vedeneev's thrust, the Germans started a tactical counter-attack near Radzymin on 31 July. The offensive, carried out by 4 understrength Panzer divisions,[#endnote_] was to secure the eastern approaches to Warsaw and Vistula crossings, and aimed to destroy the three tank corps of the Second Tank Army in detail. Under the leadership of German Field Marshal Model, the 4th, 19th, Hermann Göring, and 5th SS Panzer Divisions were concentrated from different areas with their arrival in the area of Wołomin occurring between 31 July and 1 August 1944. Although the 3rd Tank Corps gamely defended the initial assaults of the "Hermann Göring" and 19th Panzer Divisions, the arrival of the 4th Panzer and 5th SS Panzer Divisions spelled doom for the isolated and outnumbered unit.[#endnote_]
Already on 1 August, the leading elements of the 19th and 5th SS Panzer Divisions, closing from the west and east respectively, met at Okuniew, cutting the 3rd Tank Corps off from the other units of the Second Tank Army. Pressed into the area of Wołomin, the 3rd Tank Corps was pocketed and destroyed on 3 August 1944. Attempts to reach the doomed tank corps by the 8th Guards Tank Corps and the 16th Tank Corps failed, with the 8th Guards Tank Corps taking serious losses in the attempt. Although Model had planned to attack the 8th Guards Tank Corps next, the withdrawal of the 19th and "Hermann Göring" Panzer Divisions to shore up the German defenses around the Magnuszew bridgehead forced the remaining German forces around Okuniew to go on the defensive.[#endnote_][#endnote_]
For unknown reasons, on 2 August 1944 all armies that were to assault Warsaw had their orders changed. The 28th, 47th and 65th Armies were ordered to turn northwards and seize the undefended town of Wyszków and the Liwiec river line. The 2nd Tank Army was left in place and had to fight the Germans alone, without support of the infantry. Also, 69th Army was ordered to stop while the 8th Guards Army under Vasily Chuikov was ordered to halt the assault and await a German attack from the direction of Garwolin.
Further combat lasted until 10 August, when the Germans finally withdrew. Soviet losses were heavy, but not heavy enough to affect the overall course of their thrust to the vicinity of Warsaw. The 3rd Tank Corps was destroyed, the 8th Guards Tank Corps took heavy losses, and the 16th Tank Corps took significant losses as well. Overall, the Second Tank Army's losses were significant enough that it was withdrawn from the front lines by 5 August 1944.
Aftermath.
Altogether, between 1 and 10 August, the 2nd Tank Army lost 409 killed in action, 1,271 wounded and 589 missing. In addition, it lost 284 tanks and self-propelled guns (40% of these losses were non-recoverable, amounting to 113 armored vehicles lost permanently[#endnote_]) out of 679 available to the army on 30 July.[#endnote_] After World War II, communist propaganda used the example of the Battle of Radzymin of 1944 as a proof that the German counter-attack prevented the Red Army from helping the Warsaw Uprising. However, it remains unknown why the Soviet assault was halted as some Russian archives are still closed to historians. Some Polish and Western historians argue that the Soviet assault was halted because Stalin wanted the Warsaw insurgents, loyal to the Polish government in exile (known for its anti-Soviet stance), destroyed.
The Soviet command apparently did not blame Lieutenant-General N. D. Vedeneev for the encirclement and destruction of the 3rd Tank Corps. Vedeneev survived the battle and remained in command. The 3rd Tank Corps was honored by being designated the 9th Guards Tank Corps in November 1944.