I want to know the answer to the following question:
What was the name of the group that waged war in the Baltic?
All the background I'm provided with is that "The former German state of Prussia took its name from the Baltic Prussians, although it was led by Germans who had assimilated the Old Prussians; the old Prussian language was extinct by the 17th or early 18th century.". Is that enough to answer the question?