| Nazi Germany|
| 11 December 1942 - 30 December 1942|
Ungestüm (Vehemence) was the name given to a wolfpack of German U-boats that operated during the World War II Battle of the Atlantic from 11 December 1942 to 30 December 1942.
Wolfpack Ungestüm Wikipedia
The group was responsible for sinking nine merchant ships 33,130 gross register tons (GRT) and damaging one merchant ship 5,701 GRT.