Simplify the following text for a Grade 7 native English-speaking person.
Original: The Romans then undertook a night march to escape , but marched into another trap that Arminius had set , at the foot of Kalkriese Hill ( near OsnabrÃ 1\/4 ck ) .
Simplified: The Romans then began a night march to escape , but marched into another trap that Arminius had set , at the foot of a kill near OsnabrÃ 1\/4 ck .