Kraut
Kraut was a degoratory term used by American soldiers for describing German soldiers of Nazi Germany during World War II. 

In 2374, in a holodeck simulation set within this conflict and in which the French Resistance fought the Wehrmacht for control of Sainte Claire, Bobby Davis, a soldier of the United States Army, described the town as "crawling with Krauts".  ()

External link 
 

Insults