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.

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.

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.

The 28th, 47th and 65th Armies were ordered to turn northwards and seize the undefended town of Wyszków and the Liwiec river line.

[7] 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[citation needed].