<human>: Question: Who formed the new French Army of Chalons?
Answer: With the defeat of Marshal Bazaine's Army of the Rhine at Gravelotte, the French were forced to retire to Metz, where they were besieged by over 150,000 Prussian troops of the First and Second Armies.
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: no