Army Group South (German: Heeresgruppe Süd) was the name of three German Army Groups during World War II. It was first used in the 1939 September Campaign, along with Army Group North to invade Poland. In the invasion of Poland Army Group South was led by Gerd von Rundstedt and his chief of staff Erich von Manstein. Two years later, Army Group South became one of three army groups into which Germany organised their forces for Operation Barbarossa. Army Group South's principal objective was to capture Soviet Ukraine and its capital Kiev.