Its immediate task was to occupy Iran[3] in conjunction with the British Army and other Commonwealth armed forces in August and September 1941.
The purpose was to secure Iranian oil fields as well as safeguard the shipment of Lend-Lease war material from the US through Iran to the USSR.
[1][2] Until March 1943 it fought the German 16th Army in the Demyansk Offensive and unsuccessfully attempted to cut the Ramushevo corridor.
On April 15, it was transferred a third time, to the Steppe Front, where it received new units and fought in the Battle of Kursk.
It fought subsequently in the Battle of Belgorod, pushing back German troops from July 19 onwards.
The 53rd Army forced the Dnieper, captured a bridgehead southeast of Kremenchug, and fought hard until mid-November to retain its foothold on the right bank.
[14] In cooperation with the 1st Guards Mechanized Cavalry Group, it broke through German defenses and advanced 100 kilometers to the Tisza near Polgár.
[2] From June to July 1945 it was deployed in Mongolia near Choibalsan, and at the beginning of August the 53rd Army was transferred to the Transbaikal Front.