The Don Front was a front (military formation) of the Soviet Union's Red Army during the Second World War. The name refers to Don River, Russia.
Don Front Wikipedia
The front was created by order of the STAVKA of the Supreme High Command on Sept. 28, 1942 in order to form a more cohesive command structure to the much-reinforced Soviet forces fighting in and around Stalingrad. On that date the STAVKA ordered:
The initial composition of the Don Front was as follows:1st Guards Army.
4th Tank Army.
16th Air Army.
The command cadre of the new front came almost entirely from Rokossovsky's Bryansk Front, leaders that he trusted and would follow him until he was ordered to take command of 2nd Belorussian Front in late 1944.