Simplify the following text for a Grade 8 native English-speaking person.
Original: While Varus was on his way from his summer camp somewhere west of the Weser river to the winter headquarters near the Rhine , he heard reports of a local rebellion , fabricated by Arminius .
Simplified: While Varus was on his way from his summer camp , west of the Weser river , to the winter headquarters near the Rhine , he heard reports of a local rebellion .