The front was first formed in September 1918, fighting against the White Don Cossacks and the Volunteer Army in southeastern Russia. It advanced into the North Caucasus in January 1919, but was forced to retreat from eastern Ukraine by an attack of the Armed Forces of South Russia (AFSR) in May and June. The Southern Front then retreated in the face of the latter's Moscow offensive, launching a counterattack in August that advanced into northeastern Ukraine and to the Don River. With its rear disrupted by White cavalry raids, the front retreated north in September and early October, moving as far as Orel. In October the front launched a counteroffensive, defeating the AFSR, leading to the latter's precipitate retreat to the Black Sea by early January. The front was redesignated the Southwestern Front on January 10, 1920, at the beginning of the Red advance into the North Caucasus.