 Complete the following phrase:  The first detachment of the regiment left for the field army in late January 1814, but by mid March the entire regiment was reduced to 200 sabres. The regiment was eventually renamed as the 2nd Regiment of Chasseurs a Cheval of the Guard in 1815. The 1st Éclaireurs fought on many engagements during the 1814 campaign in France : Six Days Campaign, Battle of Brienne, Battle of Champaubert, Battle of Montmirail, Battle of Château-Thierry, 