High Quality Content by WIKIPEDIA articles! The 6th Army was a designation for German field armies which saw action in World War I and World War II. The 6th Army is best known for fighting in the Battle of Stalingrad, during which it became the first entire German field army to be completely destroyed. After the battle of Stalingrad, approximately 107,800 soldiers of the 6th Army entered Soviet captivity; only about 6,000 survived.