The Southwestern Front was a name given to a Front (or Army group sized military formation) by the Imperial Russian Army during the First World War, by the Russian Soviet Federative Socialist Republic during the Russian Civil War, and by the Red Army during the Second World War.
The Southwestern Front in this article describes several distinct organizations during the Second World War. This Red Army formation was first created on June 22, 1941 from the Kiev Special Military District. The western boundary of the front in June 1941 was 865 km long, from the Pripyat River and the town of Wlodawa to the Prut River and the town of Lipkany at the border with Romania. It connected to the north with the Western Front, which extended to the Lithuanian border, and to the south with the Southern Front, which extended to the city of Odessa on the Black Sea.
The Southwestern Front was on the main axis of attack by the German Army Group South during Operation Barbarossa. At the outbreak of war with Germany, the Front contained the Soviet 5th, 6th, 26th, and 12th Armies along the frontier. 16th and 19th Armies were in reserve behind the forward forces. These forces took part in the tank battles in western Ukraine and were surrounded and destroyed at the Battle of Uman and the Battle of Kiev (1941) in August and September 1941.