Given the task definition and input, reply with output. In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

The Battle of Hurtgen Forest (German: "Schlacht im Hurtgenwald" ) was a series of fierce battles fought from 19 September to 16 December 1944 between American and German forces on the Western Front during World War II in the Hurtgen Forest about 50 mi2 east of the BelgianGerman border. It was the longest battle on German ground during World War II, and is the longest single battle the U.S. Army has ever fought. Question: Which battle occurred first in history, The Battle of Hurtgen Forest or The Battle of Gettysburg? Answer: The Battle of Gettysburg
The Battle of Hurtgen Forest German: Schlacht im Hurtgenwald was a series of fierce battles fought from 19 September to 16 December 1944 between American and German forces on the Western Front during World War II in the Hurtgen Forest about 50 mi2 east of the BelgianGerman border.